The Mending of Dominaria The Mending of Dominaria can be slow but offers an incredible amount of self-mill and ramp for decks willing to wait a few turns
Maybe someone more versed in these cards can opine though, as I could very well be wrong
The decks strategy is to augment him with cards that grants evasion like Rogues Passage and protection with Swiftfoot Boot
Rune-Tail, Kitsune Ascendant / Rune-Tails Essence Another card that wasnt designed for Commander rules but fits in so well because of the starting life total, Rune-Tail, Kitsune Ascendant is the lifegain entry of the list
For the most part, creature type payoffs have followed this same model for the last 31 years
The Mirrodin Towers ( Tower of Eons , Tower of Calamities , Tower of Champions , Tower of Fortunes ) These towers look epic, have huge activation costs, and rarely see play