7 cards where the card is tagged “gains-defender”

Corrupted Shapeshifter (Modern Horizons 3 #56)
Mistform Wall (Onslaught #99)
Molten Sentry (Ravnica: City of Guilds #136)
Primal Clay (Masters 25 #228)
Primal Plasma (Time Spiral Remastered #80)
Testament of Faith (Odyssey #55)
Woolly Razorback (Coldsnap #25)

This search is finished. Now the real work can begin.