毒吐きナメクジ/Spitting Slug

Creature - Slug
{1}{G}: Spitting Slug gains first strike until end of turn. <CR>
Whenever Spitting Slug blocks or becomes blocked by a creature, if Spitting Slug doesn't have first strike, that creature gains first strike until end of turn.

Creature - Slug
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.