Put a +1/+1 counter on target creature, then double the number of +1/+1 counters on it.
Flashback {8}{G}{G}. This spell costs {X} less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Near Mint - $1.00
Near Mint Non-English - $1.00
Lightly Played - $0.90
Lightly Played Non-English - $0.90
Played - $0.70
Played Non-English - $0.70
Heavily Played - $0.60
Heavily Played Non-English - $0.60
Damaged - $0.50
Damaged Non-English - $0.50