Relm, Paintbrush Savant

Haste
Whenever Relm, Paintbrush Savant attacks, you
may pay {x}{r}{g}, where X is the converted mana
cost of target creature the attacked player
controls. If you do, create a creature token that is
a copy of the targeted creature that's tapped and
attacking. Sacrifice it at the end of combat.
{6}{r}{g}: If a creature token entered the battfield
under your control this turn, have it fight target
creature you don't control.