Where other three drops like Seasoned Pyromancer and Fable of the Mirror-Breaker may offer more value long-term, killing your opponent on turn four is preferable in most cases
however, dont worry too much yet about the cards design or extra designations such as ex
Price Research: Check recent sales on established platforms, such as eBay, TCGplayer, and PSA auction results, to gauge the fair market value before purchasing
Azula, On the Hunt
Treasures have a large amount of utility (ramp, color fixing, an extra permanent, an extra artifact, something to sacrifice) which is further bolstered by AFR having cards which give you benefits for spending treasure
If there's a cost associated with having the creature block, the player isn't forced to pay that cost