When Thriving Grubs enters the battlefield, you get {E}{E} (two energy counters).
Whenever Thriving Grubs attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it.
Near Mint - $0.10
Near Mint Non-English - $0.10
Lightly Played - $0.10
Lightly Played Non-English - $0.10
Played - $0.10
Played Non-English - $0.10
Heavily Played - $0.10
Heavily Played Non-English - $0.10
Damaged - $0.10
Damaged Non-English - $0.10
Foil Prices
Near Mint Foil - $0.40
Near Mint Foil Non-English - $0.40
Lightly Played Foil - $0.30
Lightly Played Foil Non-English - $0.30
Played Foil - $0.30
Played Foil Non-English - $0.30
Heavily Played Foil - $0.20
Heavily Played Foil Non-English - $0.20
Damaged Foil - $0.20
Damaged Foil Non-English - $0.20