Any time this comes up, it's going to be a very subjective judgement call from that tournament's head judge, different head judges are going to rule different ways, there's going to be lots of inconsistency between tournaments, and there's nothing to be done about it unless Wizards deigns to clarify their rules
This is very intriguing to me, but Im skeptical as to the power level since we wont have access to both black and white with this commander
For people that only know in-person duels or Duelingbook, adjusting to an automatic simulator might take a couple matches
But doing so costs them a net three mana, complicating non-Path outs like Supreme Verdict or Snapcaster Mage
I can liken this archtype to that of the Atlantean archtype, as they were designed to enhance the function of the Mermail beyond their normal, in-theme capability
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