Manaplasm 

Creature - Ooze
Urak froze when he heard it. That was his first mistake. He turned and cast a dramatic ward spell. That was his last.
Power/Toughness:
1/1Artist:
DaarkenShare:
Text:
Whenever you cast a spell, Manaplasm gets +X/+X until end of turn, where X is that spell's mana value.
Rulings:
- 10/1/2008 Converted mana cost 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.
- 10/1/2008 While a spell with <img src="/Handlers/Image.ashx?size=small&name=X&type=symbol" alt="Variable Colorless" align="absbottom" /> in its cost is on the stack, its converted mana cost takes the chosen value of X into account. For example, if you cast Blaze (a spell with the mana cost <img src="/Handlers/Image.ashx?size=small&name=X&type=symbol" alt="Variable Colorless" align="absbottom" /><img src="/Handlers/Image.ashx?size=small&name=R&type=symbol" alt="Red" align="absbottom" />) and choose a value of 5 for that X, then your Manaplasm will get +6/+6 until end of turn.
Legality:
- standard: Not legal
- future: Not legal
- frontier: Not legal
- modern: Legal
- legacy: Legal
- pauper: Not legal
- vintage: Legal
- penny: Legal
- commander: Legal
- 1v1: Legal
- duel: Legal
- brawl: Not legal
- oldschool: Not legal
- historic: Not legal
- pioneer: Not legal
- gladiator: Not legal
- premodern: Not legal
- historicbrawl: Not legal
- paupercommander: Not legal
- alchemy: Not legal
- explorer: Not legal
- predh: Legal
- oathbreaker: Legal
Sets:
-
Conspiracy: Take the Crown #186 (uncommon)
-
Shards of Alara #138 (rare)