Temple Bell is of course extra nice if you can untap it at will
Even if youve only used Evolving Wilds and Harrow by the time you cast it, four mana for two lands is still pretty reasonable
In general, I think such Gimmick decks can be built with the following parameters: 11-16 Lands 9-16 copies of Card A (Hero, Rat, Elves etc.) 4-8 copies of Card B (Dark Ritual, Crusade, Giant Growth) Remaining cards are miscellaneous inclusions or singletons
This modern metal influence is not restricted to just Phyrexians, though
Here are the pull rates for the most expensive cards in the Standard-legal set
Beanstalk Giant // Fertile Footsteps Putting extra land onto the battlefield, aka ramping, is one of the most powerful things you can do in MTG, especially in commander