If at least one creature in combat has first strike or double strike, you can activate Yuffie's ninjutsu ability during the first-strike combat damage step
Theres a pretty good combo with Mishra, Eminent One
Potentially, this spike may continue to climb in the coming days and weeks, since there are only 33 liftings left on TCGplayer
Consider Mana Curve: The mana curve refers to the distribution of cards based on their mana cost
If thats not fitting for the problem youre facing, you can also choose to have all creature tokens get -2/-2 until the end of the turn, which is going to be great against Wolf tokens, Zombie tokens, probably Human tokens and basically every other creature token too
Understanding these pitfalls helps avoid flawed conclusions