Rhythm of the Wild makes it so your creatures cant be countered and gives them all riot, letting you choose to give them haste or a +1/+1 counter which is nice depending on the board
If we want even more Zulaport Cutthroat action, we can use Pious Evangel, which flips from a one-sided Soul Warden that gains one life on the way in into a bigger Cutthroat
It also dovetails nicely into the D&D theme, using the conceit of character creation to add to the potential mana colors Commanders can use while also sprinkling in powerful new abilities
You don't have to reveal the enchanted card while it's in your hand
It has "Sacrifice this artifact: Add one mana of any color to your mana pool." 1, T: Tap target creature
K'rrik will also be a target the second he hits the board, so be sure to run protection or reanimation like Beacon of Unrest to keep him on the board.