Touch the Threefold Sun
This spell can't be countered.
Put a +1/+1 counter on each creature you control. Touch the Threefold Sun deals 1 damage to each of those creatures. Repeat this process once for Dinosaurs you control.
Creature - Djinn (Mythic)
Flying, lifelink, menace
Whenever you cast a white spell, target player gains 4 life.
Whenever you cast a blue spell, you may tap or untap target creature.
Whenever you cast a black spell, target player mills four cards.
Zanuku, Gharial Overlord
Legendary Creature - Crocodile (Mythic)
First strike, swampwalk, forestwalk, islandwalk
Whenever you cycle Zanuku or another card, draw an additional card. If you spent five or more mana to activate the cycling ability, each opponent exiles a card from their hand.
End to Prophecy
Destroy nonland permanent. If that permanent is legendary, scry 2.
This spell costs less to cast from your graveyard for each legendary permanent you control.
Creature - Elemental Serpent (Mythic)
Whenever Seaquake Serpent deals combat damage to a player, sacrifice a land. When you do, draw cards equal to the number of lands you control that share a land type with that land, then Seaquake Serpent deals that much damage to target player or planeswalker, then reveal cards from the top of your library until you reveal three land cards. Put them onto the battlefield, then shuffle.
I'm a simple Magic player since several years ago from China. Now I live in New Jersey.