I don't see how "Survivor" would trigger if the creature it's on wasn't on the battlefield. (Worded differently it could: "When X is dealt damage, do {foo} at the beginning of your end step...) One interesting detail: If a creature regenerates, damage is removed from it. This means at...

Zahul's Eye -- B
Enchantment - Aura Curse
Enchant planeswalker
Creatures must attack enchanted planeswalker if able.

Skyhigh Eye -- 1U
Creature - Aven Scout
Flying
1U, : Reveal the top card of each player's library. If a blue card is revealed this way, return Skyhigh Eye to hand.
1/2

Resounding Courage -- W Enchantment - Aura Echo WW Enchant creature Enchanted creature gets +1/+2 and has vigilance. When Resounding Courage's echo cost is paid, you may create a token copy of it enchanting the same creature. When you don't pay Resounding Courage's echo cost, destroy all copies of ...

Votes: Riria, JessWill . Moonlace Amulet -- 3 Artifact Cumulative Upkeep - BP or C If a player would add mana of a color already in his or her mana pool, that player adds that much colorless mana instead. When you don't pay Moonlace Amulet's cumulative upkeep cost, lose life equal to the amount of a...

Basalt Monitor -- 3
Artifact Creature - Golem
Whenever Basalt Monitor untaps, if it had become tapped earlier the same turn, put a +1/+1 counter on it.
2/2

Tattered Shade -- 1BB
Creature - Shade
Flying, hexproof
B: Tattered Shade gets +1/+0 and loses hexproof until end of turn.
0/3

Root Cellar -- 2GG Enchantment - Field At the beginning of your upkeep, create a 1/1 Onion creature token. If you control an Onion creature, create a 3/3 Radish creature token with haste instead. If you control an Onion and a Radish, create a 5/5 Potato creature with haste and vigilance instead. If...

Quash the Spark -- XBBB Enchantment - Aura Enchant planeswalker with less than X loyalty At the beginning of the upkeep of enchanted planeswalker's controller, that planeswalker loses one loyalty. Whenever a loyalty ability of enchanted planeswalker is activated, its controller loses life equal the...

Votes: JessWill, void_nothing . Transdimensional Beeble -- 3U Creature - Beeble When Transdimensional Beeble enters the battlefield, if it's not a token, each player in every game you can see creates a token copy of it. As long as every player in every game you can see controls a Beeble, Transdimens...

Votes: Riria, slimytrout
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Skullborer -- B
Creature - Worm
Whenever Skullborer deals combat damage to a player, put a +1/+1 counter on it.
Your opponents' maximum hand size is reduced by one for every +1/+1 counter on Skullborer.
1/1
.
IIW: Ante cards

Goblin Masseuse -- 1RR
Creature - Goblin
: Remove a counter from target creature, tap it, then put a +1/+1 counter on it.
Feel better yet?
2/3

IIW: A book with no title.

Nim Souldrinker -- 3B
Creature - Shaman
Nim Souldrinker gets +1/+0 for each artifact you control.
: Remove a counter from target creature you control.
, : Move a -1/-1 counter from target creature you control to target creature you don't control.
2/4

Votes: Riria, MonoRedMage . Ekthis, Blood's Grudge -- 2BR Legendary Artifact Whenever damage a creature you control is prevented, put that many rage counters on Ekthis, Blood's Grudge. BR , Sacrifice Ekthis, Blood's Grudge: Target creature gets +1/+0 for each rage counter on Ekthis, Blood's Grudge a...

Votes: dyd, Pygyzy (special thanks to MonoRedMage!) Voracious Jungle Land - Forest ([sym=t]: Add [sym=g]) Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. If you do, put twice that many +1/+1 counters on it.) Voracious Jungle can't devour creatures with converted ...

Votes: Riria, kwanyeegor-ii . Nulhaut's Shell -- 3 Artifact X , [sym=t]: If no cards are underneath Nulhaut's Shell, exile target spell with converted mana cost X or less and place it underneath Nulhaut's Shell. Put X +1/+1 counters on Nulhaut's Shell. It becomes a 0/0 Construct creature. (It's stil...

Icatian Javelineers ... um, maybe not. Jump ... probably no. Fencing Ace ... don't think so. . Mogg Shotputter -- R Creature - Goblin Goblin Shotputter enters the battlefield with a rock counter. [sym=t], Remove a rock counter: Mogg Shotputter deals one damage to any target. [sym=r], [sym=t], Remov...

You could probably streamline the the triggered ability into "... if no spells were cast last turn, you may search your library for a basic land card and put it onto the battlefield tapped, then shuffle >cardname> into your library. It changes the functionality slightly.

Gruesome Fate -- 3BB
Enchantment
When Gruesome Fate enters the battlefield, destroy target creature.
Creature spells that share a name with a creature destroyed this way cost more to play.
Creatures that share a name with a creature destroyed this way get -1/-1.

Votes: Riria, void_nothing
.
Ring of Malfeasance -- BBB
Artifact
, Pay one life: If you control less than five Rings, create an artifact Ring token.
Whenever you cast a black spell, gain one life for each Ring you control.

1. One card uses hybrid mana. 2. All cards are colored artifacts. 3. All cards have activated abilities. Azorius Spellsnare -- UW Artifact [sym=W] or [sym=U], [sym=t], Sacrifice Azorius Spellsnare: Put target spell on top of its owner's library. Gain two life. Dimir Spellsnare -- UB Artifact [sym=U...

Votes: MonoRedMage, slimytrout
.
Chain of Strength -- G
Enchantment - Aura Chain
Enchant creature
Enchanted creature gets +1/+1, plus an additional +1/+1 for each other creature enchanted by a Chain.

Votes: RattingRots, JessWill . Saramacella's Lens -- UR Artifact Play with the top card of your library revealed. Abilities of Saramacella's Lens can only be activated if the top card of your library is an instant or sorcery. [sym=t]: Add one mana of the top card of your library. {u/r} , [sym=t]: Ta...

Zoetrope -- 1U
Artifact
: Target permanent becomes blue in addition to its other colors. Untap it.

Sunken Chest -- 2
Tribal Artifact - Pirate
, : Create a Treasure token.
: Add one mana of any color. Activate this ability only if you control a Treasure and no other players do.