mtg commander 2019 deck Dominaria United Display (Set of 2) even before they have entered the battlefield Magic: The Gathering Commander 2019

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Sludge Monster shrinks and covers up abilities with slime counters, but won't affect your horrors

All regions except Korea and Taiwan will have Set Boosters for Prerelease prizing for Innistrad: Midnight Hunt

This isnt technically infinite right away, since you need to reach eight mana to stop paying two life per flip, but you should be able to do that within a few extra turns

Another great choice is Craterhoof Behemoth which gives your team a massive +X/+X boost and trample from your creature count, making your Elf swarm lethal

If you also have Falkenrath Gorger in play, you can chain vampires until you run out of mana