New Challenge Every Day - December 11th: Things that go "Yow!" in the night

[void_nothing]

Today's Challenge:
Things that go "Yow!" in the night

.::To Enter::.
In a single post:

• Name exactly two other players to vote for their entries for the previous challenge. (In the event that there are two or fewer entries that you are allowed to vote for, you may vote for only one.)

• Make a card that fits the current challenge.

• Include an "If I Win" (IIW) for tomorrow's challenge if you win.

Each day we use the challenge of the previous day's winner. In the case of a tie, we'll use the IIW of the tied player who has least overall points. In case of a further tie, the IIW of the earlier poster will be used.

.::Scoring::.

dyd 20 (+1)
void_nothing 19 (+3)
slimytrout 19 (+2)
Riria 18 (+2)
JovialJovian 17 (+3)
Raptorchan 12
netn10 12 (+1)
Pygyzy 11 (+1)
OneAndOnly 11 (+5)
caulkwrangler 6
FoilSquared 3
MonoRedMage 3

.::Note of the Day::.

I'm not sure what it means either.

.::Yesterday's Submissions::.
Quantum physics

Votes: slimytrout, OneAndOnly

Indeterminate Stray 2w
Creature - Cat
Lifelink
Whenever Indeterminate Stray attacks or blocks, flip a coin. If you win the flip, until the next time it attacks or blocks, it is also a black Zombie and has wither.
2/3

IIW: krasis for non-Simic guild

Votes: OneAndOnly, Pygyzy

The Uncertainty Principle
Legendary Creature - Avatar Advisor
Untapped creatures have haste.
Tapped creatures have hexproof.
"These kids move so fast its hard to know where they stand."
6/4

IIW: Multitools

Votes: Riria, JoviaJovian

Double Slit Experiment RR
Enchantment (Mythic)
Add to each instant and sorcery you cast that can deals damage, the line "among any number of targets this spell could target". (For example, Lightning Bolt deals 3 damage among any number of targets this spell could target.)

IIW: Partner with vehicle.

Votes: OneAndOnly, void_nothing

Schrödinger's Cat w
Creature - Weird Cat (U)
If Schrödinger's Cat is on the battlefield or in a graveyard, treat it as though it were both on the battlefield and in a graveyard.
We all know what it does.
1/1

IIW Gauntlets/gloves

void_nothing, JovialJovian

Quantum Tunneling U
Instant (U)
Choose one:
•Target attacking creature you control can't be blocked this turn.
•Remove target attacking creature you control from combat and untap it.

IIW: creature keywords (so far) on noncreatures

dyd, OneAndOnly

Speed of Light 2RR
Instant
Split second
You may put a creature card from your hand onto the battlefield. That creature gains haste. Spells can't be cast, abilities can't be activated, and other creatures can't attack as long as that creature is on the battlefield. Exile that creature at the beginning of the next end step or if it would leave the battlefield. When you do, it deals damage equal to its converted mana cost to you.

IIW: Phasing

Votes: netn10, void_nothing

Macro-Decoherence 1U
Instant (U)
Counter target spell unless its controller pays X, where X is that spell's converted mana cost. If a spell with converted mana cost 4 or greater is countered this way, exile it instead of putting it in its owner's graveyard.

IIW: non-treant trees

Spin X
Legendary Artifact
X is equal to the number of nonland permanents on the battlefield.
When Spin enters the battlefield, secretly choose left or right.
Whenever a nonland permanent enters the battlefield, it's controller chooses left or right at random. Then reveal your choice. If they're the same, destroy that permanent and choose left or right at random. Otherwise, secretly choose left or right.

Riria, Oneandonly
IIW: Rocket Science

Votes: slimytrout, JovialJovian

Potential Well 1GG
Artifact (R)
Creatures you control have "T, Remove X charge counters from this creature: Add X C."
2: Until end of turn, if target creature you control would deal damage, put that many charge counters on it instead.
4, Sacrifice a nonland permanent: Until end of turn, if target creature you control would be dealt damage, put that many charge counters on it instead.

IIW: Guild mechanics not from Guilds of Ravnica or Ravnica Allegiance

[dyd]

Votes: caulkwrangler, JovialJovian
(HM: Raptorchan - it's exactly the first design I had in mind, I didn't use it because.. silver-bordered)

Nightly Yower 3ub
Creature - Nightmare
Menace
When Nightly Yower enters the battlefield, each opponent who lost life this turn reveals their hand. Choose a nonland card from among those hands and exile it. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.
"Your fate shall be sealed by your own words."
5/5

IIW: contraband

[Riria]

Voyes: dyd, cawlkwrangler

A Random Tree 4BBB
Creature - Tree (MR)
Defender
When A Random Tree dies, if you control a Forest, destroy all creatures you don't control.
Yup, definitely makes a sound.
0/1

IIW: Mirrors

[Pygyzy]

Raptorchan, netn10

Toe Stub 1R
Instant (U)
Toe Stub deals lethal damage minus one to target creature.

IIW: The Sound Of Silence

[Raptorchan]

Votes: caulkwrangler, netn10

Jumpscare 3u
Creature - Spirit (U)
This spell costs 1 less for each creature attacking you and/or a planeswalker you control.
Flash
Flying
Whenever Jumpscare deals combat damage to a creature, tap that creature. It doesn't untap during its controller's next untap step.
1/4

IIW: Mummies

[slimytrout]

caulkwrangler, netn10

Slumbering Watchdog W
Creature - Dog (U)
Slumbering Watchdog enters the battlefield tapped and doesn't untap during your untap step.
Whenever one or more creatures attack you, untap all creatures you control.
2/2

IIW: Synergistic non-evergreen keyword combos (e.g. Sprout Swarm)

[JovialJovian]

votes: Raptorchan, slimytrout

Tomcat 1W
Creature - Cat
T, Tap an untapped Cat you control: Create a 1/1 white Cat creature token with lifelink.
1/2

IIW: Phasing

[caulkwrangler]

Votes: JovialJovian, Pygyzy

Close to Midnight
Legendary Night Enchantment
Whenever a nontoken creature dies or enters the battlefield from a graveyard, put a thrill counter on Close to Midnight.
Whenever a nontoken creature dies or enters the battlefield from a graveyard, if Close to Midnight has twenty four or more thrill counters on it, you may transform Close to Midnight.
And though you fight to stay alive, your body starts to shiver...
//
UnGlove, King of Thrills
Legendary Night Creature - Noble Demon
Flying
Vampires, Zombies, Spectres, Nightmares, and Horrors are night in addition to their other types.
Night creatures you control have menace and hexproof.
, Remove a thrill counter from UnGlove: Destroy target non-night creature, then create a token that's a copy of it, except it's a 1/1 black Zombie.
...For no mere mortal can resist the evil of the Thriller!
5/5

IIW: Something old or something new.

[OneAndOnly]

Votes: netn10, caulkwrangler
.
Murder Waltz -- 2B
Instant
Put a +1/+1 counter on each creature that dealt damage to another creature this turn.
.
IIW: UFOs

[netn10]

Votes: caulkwrangler, Raptorchan

Perfected Necromancy BG
Enchantment (Rare)
Counters remain on creatures you control as they moves to any zone other than a player's hand or library.
3BG: Return target creature card from your graveyard to the battlefield, then put a +1/+1 counter on it.

IIW: Mythic vehicle

[void_nothing]

Votes: slimytrout, JovialJovian

Barking Bunyip 4GG
Creature - Bunyip (U)
Protection from spells
At the beginning of your upkeep, choose a color at random.
3G, T: Barking Bunyip fights target creature of the last chosen color. Activate this ability only during your turn.
It howls a challenge to all other monsters that are near, be they leucrocota, wyvern, ghoul, titan, or yowie.
6/3

IIW: At random