Theres some laughably bad cards by todays standards, like Flowstone Thopter
That's not true of MTG Modern Horizons sets, however, which feature reprints and brand-new cards being made specifically to enter the Modern format (and beyond, into Legacy and sometimes Vintage)
Two mana to activate goes some of the way to keeping it more balanced, but its still a monster of a card in all sorts of decks
Top Commons for Blue-Red 4-Drops This deck mostly wants removal and cards that trigger off 4-mana spells, with The Emperor of Palamecia and Shantotto being the best uncommon payoffs
She rewards you for casting spells and then gives you another bonus spell by tapping her, but you can only do it once you've hit three spells in a turn
Everything we said above about the MDFC Peter Parker applies here, only this time both sides are much more powerful