Grow Extra Arms 
Instant
This spell costs less to cast if it targets a Spider.
Target creature gets +4/+4 until end of turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL
Instant
This spell costs less to cast if it targets a Spider.
Target creature gets +4/+4 until end of turn.