It wasn't the creatures that were the issue, it was the spells
You can also set up all of the damage but not challenge, then shift Robin Hood Sneaky Sleuth on top for good lore gain
You can alternate between removal and card advantage while beating down with your 3/4 planeswalker, and if its not enough, you can anthem on the +1 ability for ninjas
All combo pieces are by definition niche cards however Sword of the Meek and Thopter Foundry is one of the better combo decks possible in the cube and would be an auto include in any cube trying to support at least some combo decks
Polliwallop is a powerful bite spell thats easy to reduce to 1 mana, while Splash Portal is a flicker that cantrips in a frog deck
Despite having a Singer 9 ability, Cinderella Melody Weaver is less playable than the one-cost Cinderella thats dominated the game since her release