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From $4.50
'Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
From $0.25
Flash
When this creature enters, untap each other Merfolk you control.
As long as you attacked with three or more Merfolk this turn, Merfolk you control get +1/+0.
From $5.00
'Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
From $2.25
'Sacrifice this creature: Until end of turn, if a nontoken creature would enter and it wasn't cast, exile it instead.
From $0.75
'Destroy all creatures target opponent controls. Draw a card for each creature destroyed this way.
From $0.75
'Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token. [−2]: Target artifact you control becomes a copy of another target artifact or creature you control...
From $10.75
'At the beginning of your first main phase, choose one or more — • Sell Contraband — Create a Treasure token. You lose 1 life. • Buy Information — Draw...
From $4.50
'As this land enters, you may reveal a Merfolk card from your hand. If you don't, this land enters tapped.
{T}: Add {W} or {U}.
From $1.00
'Flying Whenever Skysovereign enters or attacks, it deals 3 damage to target creature or planeswalker an opponent controls. Crew 3 (Tap any number of creatures you control with total power...
From $3.75
'Flying Whenever Skysovereign enters or attacks, it deals 3 damage to target creature or planeswalker an opponent controls. Crew 3 (Tap any number of creatures you control with total power...