mtg war of the spark card Rare Sorin, Vengeful Bloodlord #217 nothing less than the fate of the multiverse is at stake Magic The Gathering Trading Card

This set has plenty of Equipment for Cloud to grab, so it's not hard to generate a 2-for-1 with him

[96] The patent has aroused criticism from some observers, who believe some of its claims to be invalid

You can also play cards like changelings which are every single creature type, or something like Arcane Adaptation, which helps you achieve that typal goal

Dredging for six anytime you would draw a card is often akin to drawing six cards for decks that can utilize it effectively, making this a creature worth building decks around

Cards that only cost Phyrexian mana like Gitaxian Probe or with alternate costs like Thunderclap and Foil dont just make it easier to trigger Eris

Honorable Mention #2 - Gruesome Scourger I know that it might just be me