Trial of Knowledge 
Enchantment
When this enchantment enters, draw three cards, then discard a card. When a Cartouche you control enters, return this enchantment to its owner's hand.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL