Cloaca

@jake_eric
Any counter doublers or increasers with these two would go infinite if that is what you are looking to do.

For example with [[hardened scales]] on board you would pay one mana and tap the crypticfor two +1/+1 counters. Then you could pull both off for 4 mana and use 2 to untap and one to activate again.

[[Hivestone]] is a sliver specific ability to convert all creatures into slivers. [[Artificial Evolution]] is also a fun option for changing a creature type on a spell or permanent into something else.

@jake_eric

My goal is to get the Mordor and food decks. Then tweak them to be a Sarumon vs Treebeard set of duel decks. I’m hoping that can keep them relatively on the same power level.

I do think I would have liked if they introduced a partner mechanic like the stranger things one. Where you could partner, but only with members of the fellowship.

I think the absolute cheapest would have to be pauper, and depending on what your flg nearby runs you may be able to find games to play with others without too much work.