Practical Research 
Instant
Draw four cards. Then discard two cards unless you discard an instant or sorcery card.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Draw four cards. Then discard two cards unless you discard an instant or sorcery card.