Community

Manaplasm
Creature — Ooze
Whenever you cast a spell, this creature gets +X/+X until end of turn, where X is that spell's mana value.
Urak froze when he heard it. That was his first mistake. He turned and cast a dramatic ward spell. That was his last.
Rulings (2)
While a spell with X generic mana in its cost is on the stack, its mana value takes the chosen value of X into account. For example, if you cast Blaze (a spell with the mana cost X generic mana red mana ) and choose a value of 5 for that X, then your Manaplasm will get +6/+6 until end of turn.
Oct 1, 2008
Mana value takes into account only the mana symbols printed in the upper right corner of the card. Manaplasm doesn't care about additional costs, alternative costs, cost-reduction effects, or what you actually paid to cast the spell.
Oct 1, 2008
Legality
Formats by platform
Commander
Competitive
Community & retro
Printings (2)
ALA#138$0.33
Shards of Alara
CN2#186$0.19
Conspiracy: Take the Crown