Barrell Roll

As an additional cost to cast Barrel Roll, target creature you control loses flying until end of turn.
Target creature that lost flying until end of turn gets +3/+3 until end of turn.
At the end of turn flip a coin, if you win the flip, deal three damage to target player or creature. If you lose the flip, sacrifice target creature that lost flying this turn.
"This game of tag really got out of hand."