Greg, Terrible Gamer

Doobie Brothers — Whenever Greg, Terrible
Gamer attacks, untap each attacking Ally. They
get +2/+2 and gain trample and first strike until
end of turn.
Stoned — {2}: Roll four d20. If the result is 69 or higher, Greg, Terrible Gamer gains indestructible
until end of turn. You may only use this ability
once per turn.
Guy coming on me right now.