Richard Garfield, Ph.D.

Legendary Creature - Human Designer 2/2, 3UU (5)
You may play cards as though they were other Magic cards of your choice with the same mana cost. (Mana cost includes color.) You can't choose the same card twice.¹
And yea he doth spake: "Let there be Magic."
Illus. Dave Dorman

Crystal Keep Rulings Summaries

• While you're playing (when Richard is in play), whenever you play a spell, you reveal the card to all players and name any other spell that has that card's mana cost. (Note that color very much does matter.) That spell can then be played as the named spell. You aren't allowed to name the same card twice. [Unhinged FAQ 2004/11/15]
• Richard's ability can be used to make any card legal in the format you're playing. [Unhinged FAQ 2004/11/15]
• All tournament formats have banned cards from Unhinged.
• Note - Also see Legendary, G12.9.

Format Legality	Banned in Vintage, Legacy, Extended, Standard
Printings (2/2)	Unhinged (Rare) Unhinged Alternate Foils (Rare)