Sigtris of the Spectral Ranks

Flying, Vigilance
Nonlegendary, nontoken spirits you control have myriad. (Whenever it attacks, for each opponent other
than defending player, you may put a token that's a
copy of that creature onto the battlefield tapped and
attacking that player or a planeswalker they control.
Exile the tokens at end of combat.)
{t}, Sacrifice 3 creatures: Draw a card and
gain 3 life.