I ranked each MTG card by power, tribal synergy, and performance across different pod levels
Ultimatums are color-heavy but powerful cards with a few effects each, some of which are based on the number 5
Black/red should be able to pick up as many Red Mage's Rapiers as it wants, and thats a pretty nice place to land
Notably excluding enchantments and planeswalkers from its destruction, decks that are focused on these strategies rarely have trouble closing a game once it exiles everything else, as everyone else is topdecking with few or no resources on hand
While you can pair her with many of your characters to unlock strategic advantages, one of the ways she works best is to combine her with your two Merlin characters
Rogues and Pirates can make great use of this enchantment (they can go wide with small creatures), but Merfolk is probably the best fit