Laelia's last triggered ability doesn't care which player is exiling cards from the library or graveyard
It being the first Esper (white/blue/black) creature of the Doctor Who crossover opens up some opportunities for deckbuilding at the same time
Its a clear step down from Charizard, but still comfortably above the rest of the set
The latest in a line of hatebear effects outside of white, Living Breakthrough is a stupidly powerful effect that might do absolutely nothing
So then its this nostalgia factor of, Oh, itd be great if I could reacquire a Charizard or another card that I had as a kid. The range of Pokmon media spans TV shows and video games, but its the franchises trademark trading card game that has collectors and thieves seeing dollar signs
The power level of these cards simply dont measure up to the blue ones, so these cards will benefit more in a game of EDH then a game of 1v1