Something like Beagle Boys Small-Time Crooks helps, and we can have a turn where we play Medusa, quest with Beagle Boys, and give Medusa a rush
Like any spell, each copy will check to see if its target is still legal as it tries to resolve
When your opponent's monster declares a direct attack, if you have another "Ninja" monster in your Graveyard: You can banish this card from your Graveyard to target the attacking monster, negate that attack
Cards that add +1/+1 counters are getting much more efficient, so between Innkeeper's Talent and Tribute to the World Tree, you can have a pretty powerful Warcaller leading your troops
Still, its only been printed once at base rarity in a normal set, and it sees enough play in decks like Dragapult and Gholdengo to make its Reverse Holo version worth something to fans who want an option between the normal print and the Ultra Rare print
This version features Extended Art and will be printed as a Traditional Foil card