Wall of Roots
{1}{G}
Creature — Plant Wall
Oracle Text
Defender
Put a -0/-1 counter on this creature: Add {G}. Activate only once each turn.
Watch Out
Mana abilities don't use the stackRules Note
If this card's activated ability produces mana and doesn't target, it's a mana ability. Mana abilities resolve immediately without using the stack — opponents can't respond to them. However, abilities that target (even if they produce mana) aren't mana abilities.