Voidspren

Bestow{2}{r}{r}(If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
Enchanted creature gets +2/+2 and double strike.
{3}{r}{r}, sacrifice three untapped lands. Exile Voidspren, then return it to the battlefield bestowed to target land you control. Enchanted
land is a 12/12 creature that is still a land.