Manifold Mouse grants double strike to mouse. Regular damage is never assigned.
Manifold Mouse gives mouse or itself double strike. First strike damage is dealt, but NO regular combat damage. I have lost MANY games because of this. I can't believe I'm the first to report this.
1
vote
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Rezzahan#77802
commented
If the first strike kills all blockers, then the still blocked double striker has nothing to deal damage to, and so deals no damage in the second combat damage step. Removing all blockers does not make the creature unblocked, and does not allow it to deal damage to the player/planeswalker it is attacking.