Heart Warden : A cycle and a search for a basic land card
It helps power out expensive Commanders, but does only this without jumping through hoops involving Doubling Cube, it cant cast any other spell
Its not flashy, but it keeps you in the fight and buys time for your bigger plays
Unsurprisingly given the slow and wide nature of the format, the majority of these are Commander decks
[1] Her strongest weapon, the Onion Knight, went through several drafts in the sketch phase, including one idea to have the sword and shield resemble onions
Effects that care about cards only care about cards in the sense of: This thing was in your starting deck. No matter how many Gold and Treasure token artifacts you sacrifice, they won't count towards transforming The Everflowing Well the Well wants cards in your graveyard