Mimi, Sneaky Mimic

{2}{b/r}, {t}: Roll a six-sided die. If you roll a 1 or
a 2, Mimi deals 2 damage to any target. If you roll
a 3 or a 4, you may tap target creature with flying.
If you roll a 5 or a 6, you gain 4 life.
{3}: Mimi becomes a 0/5 artifact creature with defender and indestructible until end of turn.
"You thought this chest was your treasure. But it was
me, Mimi the Mimic!"