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Emry, Lurker of the Loch Emry, Lurker of the Loch is an efficient bit of self-mill with recursive potential, but this card requires a high concentration of artifacts, making it one of the narrower options on the list

Fair warning: this infection is liable to spread

It allows players to pay an additional cost when casting a spell to use multiple effects within a card, like Rude Awakening

You could also go down the group hug route with cards like Rites of Flourishing and Ghirapur Orrery

Phyrexian Arena gives you an extra card each turn at the cost of 1 life, but Sheoldred immediately cancels that out by gaining you 2 life