Funnily enough, Rick only works with humans whereas Grimdancer hails from a plane where being human is almost always a downside
You could also go a tokens route, generating tokens for casting non-creature spells, and using effects like Impact Tremors to kill opponents and keep your hand topped up
And if you liked that cheap deck, why not check out some of these older options as well
Executioners Capsule
I was a bit surprised by quite how effective the Grey Merchant is, initially intending it to reside in the C cube only to come out for quirky decks but it seems comfortably powerful enough for a main cube slot
Next, play the Mox, flicker the Teferi, return it to play with full loyalty, and use it to bounce the Mox back to your hand after floating a mana with it