Selfless Guardian

Flying, legion
(For each creature with legion, creatures you control
that share a type with a legion gain another legion
level:
I. Creatures of this type cost you {1} less to cast.
II. Creatures of this type you control have +1/+1.
III. Whenever a creature of this type enters the battlefield under your control, draw a card.)

Sacrifice Selfless Guardian: Target creature gains indestrucible until end of turn.