Southern Air Temple 
Legendary Enchantment — Shrine
When Southern Air Temple enters, put X +1/+1 counters on each creature you control, where X is the number of Shrines you control. Whenever another Shrine you control enters, put a +1/+1 counter on each creature you control.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL