Whenever Spitting Slug blocks or becomes blocked, you may pay {1}{G}. If you do, Spitting Slug gains first strike until end of turn. Otherwise, each creature blocking or blocked by Spitting Slug gains first strike until end of turn.
NM-Mint - $2.00
Lightly Played - $1.80
Moderately Played - $1.60
Heavily Played - $1.40
Damaged - $1.00
NM-Mint Non English - $2.00
Lightly Played Non English - $1.80
Moderately Played Non English - $1.60
Heavily Played Non English - $1.40
Damaged Non English - $1.00