Name:Storage Matrix
ManaCost:3
Types:Artifact
S:Mode$ Continuous | Affected$ Player | AddKeyword$ OnlyUntapChosen:Artifact,Creature,Land | CheckSVar$ X | SVarCompare$ EQ1 | Description$ As long as CARDNAME is untapped, each player chooses artifact, creature, or land during their untap step. That player can untap only permanents of the chosen type this step.
SVar:X:Count$Valid Card.Self+untapped
AI:RemoveDeck:All
AI:RemoveDeck:Random
SVar:Picture:http://www.wizards.com/global/images/magic/general/storage_matrix.jpg
Oracle:As long as Storage Matrix is untapped, each player chooses artifact, creature, or land during their untap step. That player can untap only permanents of the chosen type this step.