Arrows-and-boulder trap

If any creature target opponent controls is attacking, you may pay {1}{r}{r} rather than pay Arrows-and-boulder trap's casting cost.
Arrows-and-boulder trap deals 2 damage to every creature target player controls. Create a 6/6 red boulder creature token with haste and trample that has "This creature attacks if able" and "At
the end of any combat phase, if this creature attacked this turn, exile it".
"This can't get any worse, can it now ?"
-Balgrin Javvik, Burntsteel Vanguard