You can stop later attacks if you use Blast Digivolve, or if you take advantage of this effect during your turn, you can prevent your opponent from blocking you with
Related How the Scarlet and Violet era Megas do it better A powerful card like a Mega ex cant be too easy to play, but the modern equivalent of this mechanic seems much less punishing than its predecessor
Some of the Ancient Gear boss monsters are so strong that they can win a game outright, and this card makes summoning those beasts almost unfairly easy
These include a copy of a playable Guzzlord GX as well as a bigger copy for display purposes
Having a single mountain in the background looks like a specific mountain, say Mt
[1] [2] [3] The player can then cut their own Deck, but if they do they must then present their Deck to their opponent who can cut their Deck again