I personally think the deck is still finding its place, but the build I have the most faith in is UG Omniscience
Icetill Explorer from Edge of Eternities is a perfect card Greater Good is an amazing way to sacrifice Sandman, Shifting Scoundrel and net you big card draw Lizard, Connors's Curse A 5/5 trampler for four is already aggressively costed, but Lizard takes things further with his "Lizard Formula." When he enters, he strips a creature of all abilities and locks it in as a vanilla 4/4
The misleading name has drawn ire from folks in the community and honestly fair enough: I'd be bummed if I bought the precon expecting an Eldrazi deck only to find out my top-end is filled with cards like Metalwork Colossus and Ancient Stone Idol
This two-mana artifact can tap for one mana of any colour in your commanders colour identity
On the other hand, counterfeit cards are designed to be as realistic as possible to fool people into thinking they are real, so while all counterfeit cards are technically proxies, not all proxies are counterfeit cards
Mishra's Bauble sees lots of play in Modern Murktide lists to get an artifact in the graveyard