Sett, The Boss

Double strike, vigilance, trample, haste
Your opponents can't caste spells during combat.
Sett, The Boss attacks each combat if able.
At the beginning of combat, on your turn, you
may pay {2}{r/g}. If you do, double target creature's
power until the end of turn. That creature must
be blocked this combat if able.
({r/g} can be paid with either {r} or {g}.)