Speaking of hand refill, Windfall is an obvious choice in a Temmet deck, but I also love running Titan of Littjara here too
Pokmon cards are the same size as MTG cards, so sleeves for Pokmon cards will work as well and if you already have some you can use them for Magic cards too
On average, moving from 55% to 60% wins nets you 80 gems (i.e., you lose 80 fewer gems)
The two colors it protects from are fairly common, but the real attraction is the triggered ability
The equip ability on its own, without outside help from cards like Leonin Shikari, cannot be activated at instant speed, so if you play an Artificers Hex on an equipment thats already attached to a creature, they will not be able to remove that equipment before they are in their main phase, guaranteeing you a dead creature