Have

Carnivorous Moss-Beast

{5}{G}{G}: Put a +1/+1 counter on this creature.

Runeclaw Bear

Research Assistant

{3}{U}, {T}: Draw a card, then discard a card.

Forest

Turn to Frog

Until end of turn, target creature loses all abilities and becomes a blue Frog with base power and toughness 1/1.

Peel from Reality

Return target creature you control and target creature you don't control to their owners' hands.

Invasive Species

When this creature enters, return another permanent you control to its owner's hand.

Stormtide Leviathan

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
All lands are Islands in addition to their other types.
Creatures without flying or islandwalk can't attack.

Mercurial Pretender

You may have this creature enter as a copy of a creature you control, except it has "{2}{U}{U}: Return this creature to its owner's hand."

Encrust

Enchant artifact or creature
Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated.

Fugitive Wizard

Roaring Primadox

At the beginning of your upkeep, return a creature you control to its owner's hand.

Island

Plummet

Illusory Angel

Cast this spell only if you've cast another spell this turn.
Flying

Satyr Wayfinder

When this creature enters, reveal the top four cards of your library. You may put a land card from among them into your hand. Put the rest into your graveyard.

Into the Void

Return up to two target creatures to their owners' hands.

Shaman of Spring

Negate

Kapsho Kitefins

Flying
Whenever this creature or another creature you control enters, tap target creature an opponent controls.

Frost Lynx

When this creature enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.