Grand Feint

{W}
Instant
Play Grand Feint only during your combat phase.
Remove all attacking and blocking creatures from combat. Those creatures can't attack or block this turn. After this phase you get an additional combat phase.
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The idea here is pretty simple -- your first attack is just a diversion. Your attackers end up leading your opponent's blockers on a wild goose chase, but never engaging them. Meanwhile, your
real strike force moves in for the attack while some of your opponent's creatures are distracted. I have no idea how much this should cost, by the way. I've made it 3 for now, but feel free to have me change that.