Pioneer / Post-Modern Era

When Sailor of Means enters the battlefield, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any col...

Flying {2}{B}, Discard a creature card: Return Kraul Swarm from your graveyard to your hand.

This spell costs {2}{U} less to cast if you've cast an instant or sorcery spell this turn. Flying Prowess (Whenever you cast a noncreature spell,...

Defender Cycling {2} ({2}, Discard this card: Draw a card.)

At the beginning of combat on your turn, choose a kind of counter at random that Crystalline Giant doesn't have on it from among flying, first stri...

When Wingspan Mentor enters the battlefield, put a flying counter on target non-Human creature you control. {2}{U}, {T}: Put a +1/+1 counter on eac...

Mutate {4}{B}{B} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature...

Hexproof (This creature can't be the target of spells or abilities your opponents control.) Whenever Spined Megalodon attacks, scry 1. (Look at th...

Flying Vantress Gargoyle can't attack unless defending player has seven or more cards in their graveyard. Vantress Gargoyle can't block unless yo...

Whenever this creature mutates, put a +1/+1 counter on it.

Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. At the beginning of your end step, exile up to one ot...

Reach, trample, protection from multicolored Stonecoil Serpent enters the battlefield with X +1/+1 counters on it.

As an additional cost to cast this spell, discard a card. Protection from planeswalkers {1}: Sparkhunter Masticore deals 1 damage to target planesw...

Slither Blade can't be blocked.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When Shipwreck Dowser enters the battlefield, return t...

Companion — Your starting deck contains only cards with even mana values. (If this card is your chosen companion, you may put it into your hand fro...

Wingfold Pteron enters the battlefield with your choice of a flying counter or a hexproof counter on it. (A creature with hexproof can't be the tar...

Mutate {1}{W/U}{R}{R} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the cre...

Flying Shacklegeist can block only creatures with flying. Tap two untapped Spirits you control: Tap target creature you don't control.

Menace At the beginning of your upkeep, each player draws a card and loses 1 life.

When Dusk Legion Zealot enters the battlefield, you draw a card and you lose 1 life.

Flying, haste Whenever you cast a noncreature spell, put a +1/+1 counter on Sprite Dragon.

River Sneak can't be blocked. Whenever another Merfolk enters the battlefield under your control, River Sneak gets +1/+1 until end of turn.

Flash When Voracious Greatshark enters the battlefield, counter target artifact or creature spell.