To prevent the card pool from becoming too large and to shake up established strategies, The Pokmon Company International (TPCi) implements a rotation each year
(Do the damage before switching the Pokemon.) CCC - Mirror Move Effect: If Pidgeotto was attacked last turn, do the final result of that attack on Pidgeotto to the Defending Pokemon
However, as more and more Tera Pokmon are released, the effect will more often than not become two-sided, which may also benefit the opposing trainer
Draconic Muralists reminds me of a Dragon-sized Wirewood Herald, and seems like the perfect earlier-game bridge card that will come in quite handy for finding the right Dragon for the battlefield state when it dies
As a mid-evolution Pokmon, it requires patience and dedication to train, rewarding players with the formidable Dragonite upon reaching its final form