Frost Walker [Friday Night Magic 2015] Giant Remove a +1/+1 counter from

Remove a +1/+1 counter from Golgari Grave-Troll: Regenerate Golgari Grave-Troll

Set: Speed Duel Decks: Match of the Millennium Card type: Toon/Effect Monster Rarity: Common Attack: 1900 Defense: 900 Cannot attack the turn it is Summoned

When that mana is spent to cast a red instant or sorcery spell

Or something like that

Frost Walker [Friday Night Magic 2015] Giant Remove a +1/+1 counter fromSet: Friday Night Magic 2015 Type: Creature Elemental Rarity: Rare Cost: {1}{U} When Frost Walker becomes the target of a spell or ability, sacrifice it. "As the clans carved out their territories, we saw allies where the Mardu saw only obstacles." Yasova Dragonclaw