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We've seen it before with almost every expansion, with players most recently predicting Espeon and Umbreon from Eevee Grove would spell the end for DarkTina, that the Ultra Beasts from Extradimensional Crisis would break the meta, and Celestial Guardians' Rare Candy would change things forever
Add 2 "Arcana Force" monsters with different names from your Deck to your hand, also you cannot Special Summon monsters for the rest of the turn, except "Arcana Force" monsters
Trigger [Trigger] Activate this card's [On Play] effect
These anthems also really helped scale up Mausoleum Wanderer, frequently it was at 2 or 3 power thus making it a much harder disruptive tool
However, he is much more difficult than the other Behemoths because he will also blanket the battlefield with elemental magic