Ikaros, Fiery Avenger

Flying, first strike, menace
Whenever Ikaros, Fiery Avenger or another creature you control attacks, you may pay {2}. If you do, put a 3/3 red Angel creature token with Flying onto the battlefield that's tapped and attacking.
At the beginning of your end step you may have target opponent lose X life, where X is the number of Angels that died this turn