Alliances

Return all Islands to their owners' hands. Each player sacrifices a Plains or a white permanent for each white permanent they control.

Flying At the beginning of your upkeep, put a +1/+1 counter on Phantasmal Sphere, then sacrifice Phantasmal Sphere unless you pay {1} for each +1/+...

{G}: Phelddagrif gains trample until end of turn. Target opponent creates a 1/1 green Hippo creature token. {W}: Phelddagrif gains flying until end...

When Phyrexian Devourer's power is 7 or greater, sacrifice it. Exile the top card of your library: Put X +1/+1 counters on Phyrexian Devourer, wher...

{3}: If your library has ten or more cards in it, target opponent looks at the top ten cards of your library and separates them into two face-down ...

As an additional cost to cast this spell, sacrifice a creature. Gain control of target nonartifact, nonblack creature.

Flying At the beginning of your upkeep, put a wage counter on Rogue Skycaptain. You may pay {2} for each wage counter on it. If you don't, remove a...

Cumulative upkeep {W} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for ...

If Sheltered Valley would enter the battlefield, instead sacrifice each other permanent named Sheltered Valley you control, then put Sheltered Vall...

{2}: Put the top card of your graveyard on the bottom of your library.

If Soldevi Excavations would enter the battlefield, sacrifice an untapped Island instead. If you do, put Soldevi Excavations onto the battlefield. ...

{2}{G}: Splintering Wind deals 1 damage to target creature. Create a 1/1 green Splinter creature token. It has flying and "Cumulative upkeep {G}." ...

Each player may play an additional land during each of their turns. Whenever a land is tapped for mana, return it to its owner's hand.

Cumulative upkeep {1}{W} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost f...

{1}: Sworn Defender's power becomes the toughness of target creature blocking or being blocked by Sworn Defender minus 1 until end of turn, and Swo...

Thawing Glaciers enters the battlefield tapped. {1}, {T}: Search your library for a basic land card, put that card onto the battlefield tapped, the...

Cumulative upkeep—Exile the top card of your library. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unl...

Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for ...

Cumulative upkeep {G} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for ...

Cumulative upkeep—Have an opponent create a 1/1 red Survivor creature token. (At the beginning of your upkeep, put an age counter on this permanent...

{W}, Pay 1 life: Prevent the next 2 damage that would be dealt to target creature this turn. {U}: Prevent the next 1 damage that would be dealt to ...

Whenever a player taps a snow land for mana, that player adds one mana of any type that land produced. That land doesn't untap during its controlle...