Mage's Guile 

Instant
Target creature gains shroud until end of turn. (It can't be the target of spells or abilities.)
Cycling (
, Discard this card: Draw a card.)
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL