Spooky20

Creatures with power greater than the number of cards in your hand can't attack.

Whenever a nonartifact permanent enters the battlefield under your control, you may return another permanent you control that shares a permanent ty...

Each land is a Forest in addition to its other land types.

Each land is a Forest in addition to its other land types.

{T}: Add {C}. {T}, Sacrifice Wasteland: Destroy target nonbasic land.

{T}: Add {C}. {T}, Sacrifice Wasteland: Destroy target nonbasic land.

Each land is a Swamp in addition to its other land types.

Each land is a Swamp in addition to its other land types.

{T}: Add {R}. {R}, {T}: Target legendary creature gains first strike until end of turn.

{T}: Add {R}. {R}, {T}: Target legendary creature gains first strike until end of turn.

{T}: Add one mana of any type that a land you control could produce.

{T}: Add one mana of any type that a land you control could produce.

{T}: Add one mana of any color. Spend this mana only to cast a multicolored spell.

{T}: Add one mana of any color. Spend this mana only to cast a multicolored spell.

{T}: Add {U}. {1}: Return Oboro, Palace in the Clouds to its owner's hand.

{T}: Add {U}. {1}: Return Oboro, Palace in the Clouds to its owner's hand.

{T}: Add {C}. {4}{S}, {T}, Sacrifice Mouth of Ronom: It deals 4 damage to target creature. ({S} can be paid with one mana from a snow source.)

{T}: Add {U}. {U}, {T}: Untap target legendary permanent.

{T}: Add {C}. {1}{W}, {T}: Prevent all combat damage that would be dealt by target attacking creature this turn.

{T}, Pay 1 life: Add {G} or {W}. {1}, {T}, Sacrifice Horizon Canopy: Draw a card.

{T}: Add {C}. {T}: Each player gains control of all creatures they own.

{T}: Add {C}. {T}: Each player gains control of all creatures they own.

If Gemstone Caverns is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield wit...

{T}: Add {C}. {1}, {T}: Untap target land.