You'll probably want enchantment creatures and artifact lands in Winter's deck, as well as some really big cards you can suddenly reanimate to terrify your foes
Great card and a great threat but not something you want to exclusively rely on to be refilling your life total
(2021-11-19) The token that a resolving copy of a spell becomes isn't said to have been created. (2021-11-19) The copy remembers any decisions that were made for the original spell as it was cast, including values chosen for X in its mana cost and whether any alternative or additional costs were chosen
Except for its types and non-artifact subtypes, Machine God's Effigy copies exactly what was printed on the original creature and nothing more (unless that creature is copying something else or is a token
It's cheap on the cost to buy and an absolute Commander Classic for discard or other brews since you draw too
You want to get cards like Pawpsicle, Snow White, and Doc onto the board as quickly as possible, which will help you draw cards and play more characters for a discount