cowboy mtg cards Grand Abolisher - Extended Art Showcase Abraham Firth, the True: Mardu

Exiling certainly works in taking care of Avacyn, same with dealing out -1/-1 counters

Eight is typically too much to pay unless it wins you the game on the spot, and I think Ardyn is just too vulnerable to be as good as the other expensive bombs in this set like Summon: Knights of Round and Summon: Bahamut

If an ability of the equipped creature states that it has flying "as long as" a condition is true, that condition becoming true won't cause the creature to gain flying

Small details like Which crappy tertiary two-color land do I play? actually make a big difference in this format because you have to play a bunch of lands that key off each other

Its probably best to cast this at the beginning of combat or after attackers have been declared, before blockers are declared

Unfortunately, most people are fairly lazy in creating their plan against linear decks, Dredge included