Vihaan, Goldwaker Vihaan, Goldwaker makes each card that creates Treasure in your deck a potential Blade Splicer, turning Treasure artifacts into 3/3s artifact creatures with haste, making Vihaan a great treasure commander
Rick is perhaps the most powerful of the new designs
Others you probably run them all
Beyond that, efficient cheap creatures should be slotted into "strong filler" while unexciting expensive creatures and the bulk of noncreature, non-removal cards should be slotted into either "weak filler" or "mostly useless." Early in the draft, any time you're in doubt of which card to take, err on the side of taking the cheap creature
These cards are most effective when played in the mid-game to late game
It gives your creature a power boost and Trample, but the real juice is the ability to create Treasure tokens equal to the damage you deal