Take a look at the classic Base Set Charizard - with its Fire Spin attack dealing 100 damage (massive for its time), it could knock out most Pokemon in one hit
You can do all sorts of stuff with these two cards: ramp with Basalt Monolith, tutor and untap Time Vault, go after Dramatic Reversal, and more
Meownificent!
You can also try to get a Support character like Huey or Dewey out on turn two or three to ensure that your four-cost character can banish whatever Maid Marian targets, but a Maui, Soaring Demigod will almost always do the trick
But Kristen, you may ask, what about my fair Muldrotha deck? Well, most players might quip that theres no such thing as a fair Muldrotha deck, and to this day, I havent played against one though I am always open to having my mind changed