Ellisence, Mana Elemental

+2: Add two mana in any combination of blue, black, red, or colorless.
0: You may remove a loyalty counter from Ellisence, Mana Elemental. If you do, put a +1/+1 counter on it. Then, transform it.
-2: The next time you would cast an instant or sorcery spell, it gains your choice of flash, hexproof, convoke, improvise, lifelink, or wither.