Encore Performance

Whenever a legendary creature you control
fights, if it's your turn, you may pay {2}{r}{w}. If
you do, at the end of your first postcombat main
phase, untap that creature. After that phase,
there is an additional combat phase, followed by
an additional main phase. Do this only once each
turn.
His strike felled the mighty warrior, and the crowd
rose to their feet, roaring for more.