Dracohyama, The Untamed

The power and toughness of Dracohayama, The
Untamed go up by one for each mana used in
place of X.
Indestructible, Double-Strike, Hexproof
The power and toughness of Dracohyama, The
Untamed doubles every round.
All heroes have tried to fight this beast, their only
remains? Broken armor, blades and bones.