"Planeshift", +battlefield, +creature, +control, +or, +return (13)
Flying
When Cavern Harpy enters the battlefield, return a blue or black creature you control to its owner's hand.
Pay 1 life: Return Cavern Harpy to its owner's hand.
When Doomsday Specter enters the battlefield, return a blue or black creature you control to its owner's hand.
Whenever Doomsday Specter deals combat damage to a player, look at that player's hand and choose a card from it. The player discards that card.
Flash
When Fleetfoot Panther enters the battlefield, return a green or white creature you control to its owner's hand.
When Horned Kavu enters the battlefield, return a red or green creature you control to its owner's hand.
When Lava Zombie enters the battlefield, return a black or red creature you control to its owner's hand.
: Lava Zombie gets +1/+0 until end of turn.
When Marsh Crocodile enters the battlefield, return a blue or black creature you control to its owner's hand.
When Marsh Crocodile enters the battlefield, each player discards a card.
When Natural Emergence enters the battlefield, return a red or green enchantment you control to its owner's hand.
Lands you control are 2/2 creatures with first strike. They're still lands.
When Razing Snidd enters the battlefield, return a black or red creature you control to its owner's hand.
When Razing Snidd enters the battlefield, each player sacrifices a land.
When Sawtooth Loon enters the battlefield, return a white or blue creature you control to its owner's hand.
When Sawtooth Loon enters the battlefield, draw two cards, then put two cards from your hand on the bottom of your library.
Trample
When Shivan Wurm enters the battlefield, return a red or green creature you control to its owner's hand.
When Silver Drake enters the battlefield, return a white or blue creature you control to its owner's hand.
When Sparkcaster enters the battlefield, return a red or green creature you control to its owner's hand.
When Sparkcaster enters the battlefield, it deals 1 damage to target player or planeswalker.
First strike
When Steel Leaf Paladin enters the battlefield, return a green or white creature you control to its owner's hand.
Gatherer works better in the Companion app!