mtg mirrodin besieged card Magic the Gathering - MTG: Event Deck: Into the Breach Phyrexian At the beginning of your end step Mirrodin Besieged - MTG Wiki

Across the various sets and blocks released in recent years theres been a push from WotC called Project Booster Fun, where they started including new alternate versions of cards in everyday packs

Warp is kind of like having a Sol Ring for a turn that taps to cast a specific effect

See why River Song is my top scoring Commander from this set

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Activated Sleeper will probably be played alongside Protean Hulk for extra value and as a general purpose creature designed to capitalize on board wipes

All in all, it's a very efficient tracker, considering it's free