Slime Dungeon Door

Slime Dungeon Door is Green and Blue
Defender
Slime Dungeon Door enters the
battlefield tapped unless you control 3 or more
Ooze creatures.
{t}: add {g} or {u} to your mana pool
{t}{g/u}{g}{u}: Summon 1 2/2 Green and Blue Ooze creature token.