MTG >Combos >Heartless Summoning +Perilous Myr +Enduring Renewal +

With

Heartless Summoning

and

Enduring Renewal

on the battlefield, cast

Perilous Myr

. He will die, since

Heartless Summoning

gives him -1/-1 stats.

Perilous Myr

dying ability will trigger, dealing 2 damage to target opponent.

Enduring Renewal

ability will trigger, making

Perilous Myr

go back to your hand. Keep looping.