Most tutors just put a card into your hand, but Beseech the Mirror actually casts it
In this format, 99% of decks out there are using their graveyard as a resource to some degree, from graveyard-themed decks like Karador, Ghost Chieftan to the random White deck that runs Sun Titan for value
During your Main Phase: You can destroy 1 "Crystal Beast" card you control or in your hand, and if you do, add 1 "Crystal" Spell/Trap from your Deck to your hand
Some people are upset about it"
Its own effects are negated, but when a monster gets to ignore every other effect in the game, its hard to complain about it losing its own effects
Starting with Summon Loading