yugioh ancient fairy dragon deck - LCKC-EN070 - Legendary Collection Kaiba - Ultra Rare 3000 1 Tuner + 1+ non Ancient Fairy Dragon : r/yugioh

The Mega Greninja ex MHR is no exception

Additionally, whenever a Level 7 LIGHT Dragon returns to the hand, it summons itself back from the GY

This spell is easy to overvalue (because it looks like 1U: destroy target creature) and undervalue (because getting five snow permanents in your deck isnt that difficult)

Some other random goodies you might like: Maddening Hex (this would be HILARIOUS with some doublers), Chandra's Ignition (if you target something with lifelink remember it's the CREATURE doing the damage, so you can gain a TON of life off of this if the board is fairly full, and it's great with a Deathtouch source like Gift of Doom), Fire Covenant (one of the best burn spells ever), and MAYBE a Rionya, Fire Dancer since you've got all those Sorceries