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From $3.00
'When this artifact enters, you may sacrifice a nontoken creature. If you do, draw X cards, then mill X cards, where X is that creature's power. Craft with one or...
From $2.00
'Subterranean Tremors deals X damage to each creature without flying. If X is 4 or more, destroy all artifacts. If X is 8 or more, create an 8/8 red Lizard...
From $0.75
'{X}{R}, {T}, Sacrifice this creature: It deals X damage to any target.
From $0.25
'Flying {2}: This creature gets +1/+0 until end of turn. {X}: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by this creature this turn....
From $1.00
This land enters with a charge counter on it. {T}: Add {C}. {X}{X}, {T}: Put X charge counters on this land. {3}, {T}, Sacrifice this land: Destroy each nonland permanent...
From $2.75
'Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell.) Choose any target, then choose another target for each time this spell was...
From $0.25
'Wurms you control get +2/+2 and have trample. {7}{G}, {T}: Create a 4/4 green Wurm creature token. This ability costs {X} less to activate, where X is the greatest power...
From $0.50
'Flying, lifelink Sacrifice a creature: Put X +1/+1 counters on Vish Kal, where X is the sacrificed creature's power. Remove all +1/+1 counters from Vish Kal: Target creature gets -1/-1...
$0.25
'Kicker {1}{W} and/or {1}{U} (You may pay an additional {1}{W} and/or {1}{U} as you cast this spell.) Choose up to X creatures and/or planeswalkers you control, where X is the...
From $0.75
'Creatures you control but don't own are Mercenaries in addition to their other types. At the beginning of your upkeep, exile the top X cards of target opponent's library, where...
$38.21
THE HORDE MARCHES FORTH! Once loyal servants of the Many-Named, the orcs splintered into scattered tribes and bandit kingdoms after his defeat. Now, they roam the wild lands bordering the...
From $4.75
Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle. Harmonize {X}{G}{G}{G}{G} (You may cast this card from your graveyard...