If a problem card has an activated or triggered ability, this flashy Merfolk might be the solution
Mazirek, Kraul Death Priest Mazirek, Kraul Death Priest is another Golgari sacrifice commander
Shadows cards best ability is Chaos Control, which has the potential to give the Split Second ability to all players who cast spells if the mana spent was from an artifact
Wrenn and Six is the backbone of the 4-color decks that define the format at the moment and grants these decks a level of consistency that is unparalleled
Dont underestimate what Bubbling Muck is capable of though, as it can perform an excellent impression of High Tide in the right shell, and it can even pull off far more potent shenanigans when paired with blues ability to untap lands and recur sorceries
Its a reanimate effect right from the command zone, and you can redirect all the damage to it while you watch it grow