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$0.25
As an additional cost to cast this spell, behold a Merfolk and exile it. (Exile a Merfolk you control or a Merfolk card from your hand.) Whenever this creature enters...
$4.50 – $5.50
'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}.
$1.50 – $3.00
'Whenever a Merfolk you control becomes tapped, you may gain 1 life.
$0.25 – $1.00
'Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
Merfolk spells and Wizard spells you cast cost {1} less to cast.
$6.00 – $10.50
'Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
$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.
$6.50 – $7.75
'Flying Namor's power is equal to the number of Merfolk you control. Whenever you cast a noncreature spell with one or more blue mana symbols in its mana cost, create...
$0.50 – $1.00
Character - Storyborn
Ink: Emerald
Cost: 1
Strength: 0
Willpower: 1
Lore: 2
Poor Souls: Whenever this character is challenged, each opponent chooses and discards a card.
$0.25
'When this creature enters, create two 1/1 blue Merfolk Wizard creature tokens. Tap two untapped Merfolk you control: Untap this creature. It gains shroud until end of turn. (It can't...
$0.25 – $0.50
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.