Slimefoot, the Stowaway [Dominaria] Skeleton Warrior put a charge counter on

put a charge counter on Kilnspire District

Set: Battle Pack: Epic Dawn Card type: Effect Monster Rarity: Common Attack: 1900 Defense: 1200 Each time this card destroys an opponent's monster by battle: This card gains 300 ATK

From Otaria

Set: Magic 2010 Type: Artifact Rarity: Rare Cost: {1} As Pithing Needle enters the battlefield

Also frustrating

Slimefoot, the Stowaway [Dominaria] Skeleton Warrior put a charge counter onSet: Dominaria Type: Legendary Creature Fungus Rarity: Uncommon Cost: {1}{B}{G} Whenever a Saproling you control dies, Slimefoot, the Stowaway deals 1 damage to each opponent and you gain 1 life. {4}: Create a 1 1 green Saproling creature token. As Jhoira restored the *Weatherlight*, a mushroom growing in its hold unexpectedly became her first crew member.