First strike, trample, haste
Whenever Life of the Party attacks, it gets +X/+0 until end of turn, where X is the number of creatures you control.
When Life of the Party enters the battlefield, if it's not a token, each opponent creates a token that's a copy of it. The tokens are goaded for the rest of the game. (They attack each combat if able and attack a player other than you if able.)
Non Foil / Near Mint - $12.86
Non Foil / Slightly Played - $11.57
Non Foil / Moderately Played - $10.29
Non Foil / Heavily Played - $7.72
Non Foil / Damaged - $6.43