pokemon mega ex full art cards - Mega-Charizard-EX (13/108) - XY Evolutions your opponent takes 2 Prize cards. Mega Skarmory ex - Perfect

The set will be legal in Alchemy and Historic formats and receive the same support as a full release, including a preorder, Mastery Pass, and cosmetics.

Mowu, Loyal Companion would be a great addition to a Green-based creature deck that focuses on +1/+1 counter synergies, as it can quickly grow in size and become a formidable threat with its built-in counter-doubling ability

All in all, the power level of this deck is pretty high, and when added up to the amazing number of unique Commander cards and the great singles, it makes the decks price worth it

Those are the basic mechanics of course, there are more nuances (specific card effects, keywords like Rush, Blocker, Trigger, etc.), but this is enough to get you started