Corrosive Mentor [Shadowmoor] Lightning[-30] Fighting[-30] your opponent cannot remove from

your opponent cannot remove from play any cards in either Graveyard

If you control this card that was Xyz Summoned this turn by using an "Exosister" monster as material (Quick Effect): You can target 1 card your opponent controls or in their GY

Set: Miscellaneous Cards Type: Lightning Rarity: Promo Retreat cost: Colorless

Set: Platinum: Base Set Type: Psychic Rarity: Rare Retreat cost: Colorless

without using "Nekroz of Brionac"

Corrosive Mentor [Shadowmoor] Lightning[-30] Fighting[-30] your opponent cannot remove fromSet: 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.