![Corrosive Mentor [Shadowmoor] XY194 Set: Sword & Shield: Black](https://cdn.shopify.com/s/files/1/0764/7005/9282/products/b53a03ce-4609-5f63-9694-274664b9d780.jpg?v=1699940438)
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Set: Sword & Shield: Black Star Promos Type: Supporter Rarity: Promo
and has "Whenever a player casts a spell or a creature attacks
He will win who
−2: Create a 1/1 blue Ninja creature token with "This creature can't be blocked
Corrosive Mentor [Shadowmoor] XY194 Set: Sword & Shield: BlackSet: Shadowmoor Type: Creature Elemental Rogue Rarity: Uncommon Cost: {2}{B} Black creatures you control have wither. (They deal damage to creatures in the form of 1 1 counters.) Guttering cinders stoke their dying flames by snuffing out the lights of others.
