Nemesis

If you control a Swamp, you may sacrifice a creature rather than pay this spell's mana cost. Creatures you control get +2/+0 until end of turn.

Defender (This creature can't attack.) {1}{B}: Regenerate Carrion Wall.

Flying Belbe's Percher can block only creatures with flying.

Flying Battlefield Percher can block only creatures with flying. {1}{B}: Battlefield Percher gets +1/+1 until end of turn.

Flying (This creature can't be blocked except by creatures with flying or reach.) Other black creatures get +1/+1. Nonblack creatures get -1/-1.

Flying Players play with their hands revealed.

Fading 4 (This creature enters the battlefield with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If yo...

{U}, {T}, Discard a card: You may tap or untap target artifact, creature, or land.

If an opponent controls a Forest and you control an Island, you may cast this spell without paying its mana cost. Put target creature on top of it...

Flying Stronghold Zeppelin can block only creatures with flying.

{U}{U}, {T}, Discard a card: Counter target noncreature spell.

{U}{U}, {T}, Discard a card: Counter target creature spell.

Sneaky Homunculus can't block or be blocked by creatures with power 2 or greater.

{3}{U}: Return Sliptide Serpent to its owner's hand.

Sacrifice Seal of Removal: Return target creature to its owner's hand.

{3}, {T}: Search your library for a Merfolk permanent card, put it onto the battlefield, then shuffle.

{U}: Rootwater Thief gains flying until end of turn. Whenever Rootwater Thief deals combat damage to a player, you may pay {2}. If you do, search ...

Whenever Chieftain en-Dal attacks, attacking creatures gain first strike until end of turn.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Lands don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player untaps a land they control.

Fading 5 (This enchantment enters the battlefield with five fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If...

Until end of turn, if a player taps a nonbasic land for mana, it produces colorless mana instead of any other type.

Protection from red

Fading 4 (This creature enters the battlefield with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If yo...