Although he may work in certain decks
These cards are most effective when played in the mid-game to late game
So I gave him a huge step up in power, having him trigger off simply attacking, which allows him to take care of any dangerous blockers preemptively
This has always been a mission statement for Lorcana
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
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