Corrosion [Visions] Oldschool −7: Exile the top ten

−7: Exile the top ten cards of your library

Creatures those players control that can block additional creatures may likewise be put into additional piles

Set: Mirrodin Type: Enchantment Rarity: Rare Cost: {2}{B} At the beginning of each player's upkeep

Donkeys to dust

Corrosion [Visions] Oldschool −7: Exile the top tenSet: Visions Type: Enchantment Rarity: Rare Cost: {1}{B}{R} Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then destroy each artifact with mana value less than or equal to the number of rust counters on it. Artifacts destroyed this way