Turn it face up any time for its mana cost if it's a creature card.) Whenever a permanent you control is turned face up, if it's a creature, you may have it fight target creature you don't control
It then adds 4 copies each of Pollywog Symbiote, Essence Symbiote, and Paradise Druid as mutate targets with strong synergies
Rogues and Ninjas
We've also clarified "Historic Cards" to "Historic Anthology II" now that you have an idea of what that means, and we've dropped "New Event Types" in favor of more specific calloutssuch as eight-person (pod) drafting, which is a feature that we're officially adding to the In Concept stage as it's currently being scoped out in preparation for development
Also last week: Chris Botelho piloted his Grixis Pact deck to a fifth-place finish at Grand Prix Portland
Theres no strict upper limit here either, but again, adding so many cards can water down your best spells and make your deck less consistent