腐蝕/Corrosion

Enchantment -
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.) <CR>
At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then destroy each artifact with converted mana cost less than or equal to the number of rust counters on it. Artifacts destroyed this way can't be regenerated. <CR>
When Corrosion leaves the battlefield, remove all rust counters from all permanents.

Enchantment -
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.) <CR>
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 can't be regenerated. <CR>
When Corrosion leaves the battlefield, remove all rust counters from all permanents.

Enchantment -
Cumulative upkeep {1} <CR>
At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then destroy each artifact with converted mana cost less than or equal to the number of rust counters on it. Artifacts destroyed this way can't be regenerated. <CR>
When Corrosion leaves play, remove all rust counters from all permanents.

Enchantment -
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.) <CR>
At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then destroy each artifact with converted mana cost less than or equal to the number of rust counters on it. Artifacts destroyed this way can't be regenerated. <CR>
When Corrosion leaves the battlefield, remove all rust counters from all permanents.

Enchantment -
Cumulative upkeep {1} <CR>
At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then, for each artifact any opponent controls, if the number of rust counters on that artifact equals or exceeds its converted mana cost, destroy the artifact. Artifacts destroyed this way can't be regenerated. <CR>
When Corrosion leaves play, remove all rust counters from all artifacts.

Enchantment -
Cumulative upkeep {1} <CR>
At the beginning of your upkeep, put a rust counter on each artifact target opponent controls. Then destroy each artifact with converted mana cost less than or equal to the number of rust counters on it. Artifacts destroyed this way can't be regenerated. <CR>
When Corrosion leaves play, remove all rust counters from all permanents.