#3 Skyshroud Claim Skyshroud Claim is a legend of the Commander format
Then she has two abilities
As long as this card is activated and in play, no spell effects can trigger
Most instances of either gating condition are on activated abilities (most of which don't cost mana and therefore need a limiting condition), neatly solving the issue I'm about to mention, but consider this example: We're playing Innistrad Crimson Vow draft
It does nothing if you cant stick creatures in play, which is usually enough to just pass altogether
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