This is particularly important, since the mill decks revolve around a strict balance between card draws, interactions and action spells
Some Evolution cards can be played on other Evolution cards
Blue Doflamingo This is the deck which has now firmly established itself as the most dominant force in the meta
Popular main attackers used in the Pokmon TCG continually rotate based on new releases and usage, so it can be useful to investigate what other trainers are adding to their decks
However, the main reason is just that the characters simply arent as endearing as The Tenth Doctor, Karlach, Aragorn or The Swarmlord
You wont get the full version of the creature back, but this is helpful with creatures who have useful ETB and death triggers that you want to cash in multiple times