The 9-card The Five Armies Clash
Its cross-format appeal nearly propelled it to the top of this list, but itll have to settle for second place
Throw in a Coat of Arms and sink your opponents beneath your plague of rats
Totem armor has no effect if the enchanted permanent is put into a graveyard for any other reason, such as if it's sacrificed, if the "legend rule" applies to it, or if its toughness is 0 or less
By the way, if your opponent controls a Sundial of the Infinite and you have an artifact removal in your sleeve, such as Krosan Grip, you cant remove Sundial of the Infinite before your opponent activates its ability, as long as your opponent is cunning and smart
If your going to play Mardu , play to it's strengths, avoid putting in high CMC tools to make it into