Being a Wizard is a pretty solid trait right now, especially with Flame of Anor being so strong and well-positioned, too, thanks to its flexibility in dealing with multiple threats or drawing cards
Tezzeret can untap artifacts to make a lot of mana, tutor out key artifacts like Mana VaultMana Vault or Voltaic KeyVoltaic Key, and has an easy to achieve -7 that slowly weaponizes all the otherwise useless artifacts on the board
The concept alone sells it -- a Transform Pokemon rendered in that signature purple blob form, ready to become anything on the field
Pushing your deck above 60 (or 40) cards makes it harder to find key cards, increases the risk of "mana flood" (drawing only lands, so you have nothing to cast) and "mana screw" (drawing too few lands, so you can't cast any of the spells in your hand), and makes it more likely that you'll draw unplayable hands
Make your board indestructible, then turn around and prevent all damage to yourself
I like the first to burn your foe's down with that 3 damage each of them which is 6 with Isshin