mtg mirrodin besieged card list Magic: the Gathering - Psychosis Crawler Phyrexian — At the beginning of your end step Creeping Corrosion (MBS-078) - Mirrodin

Most famously, using this to reanimate Worldgorger Dragon creates a loop which flickers every other permanent in and out of play forever (or until your Piranha Marsh has triggered enough times to drain their life total)

The play is fun, rewarding, and pretty consistent if you use your draw cards

In Boros, your creatures are essentially burn spells that help knock down the opponent's life total, not to be treated expressly as creatures, as with most other decks

This card was the linchpin of many combo strategies, but it was eventually banned in Legacy and restricted in Magic's Vintage format

Choices made for permanents as they entered the battlefield are remembered when they phase in