shiny zygarde pokemon card 12 GX and Pokémon Zygarde GX (225/150) - SM8b

An ability that triggers "whenever you earthbend" triggers immediately after the list of actions earthbend entails is complete, even if some or all of those actions were impossible, perhaps because an effect does not allow counters to be placed on creatures you control

So, when Ardyn gets passed to you, it would make perfect sense to think that Boast is just the name of this insane activated ability that lets you stack your deck for one generic and a black per card

I'd prefer the common as my commander

Then you draw a card for each card type among cards discarded this way.: Each opponent sacrifices a permanent of their choice

is one of the premium ways to avoid losing a game of MTG, as well as to avoid losing your board