Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)When Shriekmaw enters, destroy target nonartifact, nonblack creature.Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)
When Benthicore enters, create two 1/1 blue Merfolk Wizard creature tokens.Tap two untapped Merfolk you control: Untap Benthicore. It gains shroud until end of turn. (It can't be the target of spells or abilities.)
Bog Hoodlums can't block.When Bog Hoodlums enters, clash with an opponent. If you win, put a +1/+1 counter on Bog Hoodlums. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)
All creatures able to block Nath's Elite do so.When Nath's Elite enters, clash with an opponent. If you win, put a +1/+1 counter on Nath's Elite. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)
When Hearthcage Giant enters, create two 3/1 red Elemental Shaman creature tokens.Sacrifice an Elemental: Target Giant creature gets +3/+1 until end of turn.
Put a flood counter on target land. That land is an Island in addition to its other types for as long as it has a flood counter on it. If you control a Merfolk, draw a card.
FlyingWhen Marsh Flitter enters, create two 1/1 black Goblin Rogue creature tokens.Sacrifice a Goblin: Marsh Flitter has base power and toughness 3/3 until end of turn.
: Creatures you control get +1/+0 until end of turn. If this is the third time this ability has resolved this turn, creatures you control gain first strike until end of turn.
: Creatures you control get +1/+0 until end of turn. If this is the third time this ability has resolved this turn, creatures you control gain first strike until end of turn.
Whenever you clash, tap target creature an opponent controls. If you won, that creature doesn't untap during its controller's next untap step. (This ability triggers after the clash ends.)