whoever has the most EX pokemon basically wins
Unlike EX Pokemon, which were usually Basics regardless of if they're evolved or not, M Pokemon still needed to be evolved onto an existing EX Pokemon to play M Rayquaza EX, you needed a Rayquaza EX in play to evolve
They were released in conjunction with the Pokmon Trading Card Game World Finals and have been sought after ever since by collectors, only increasing in value with age
Artifact Creature: Esper SentinelEsper Sentinel, 425447 Inclusions Artifact Land: Seat of the SynodSeat of the Synod, 144694 Enchantment Creature: Sanctum WeaverSanctum Weaver, 116227 Enchantment Artifact: Whip of ErebosWhip of Erebos, 76481 Kindred Enchantment: Eldrazi ConscriptionEldrazi Conscription, 46704 Kindred Instant: Crib SwapCrib Swap, 35661 Kindred Sorcery: Elvish PromenadeElvish Promenade, 28369 Instant Sorcery: Repudiate // ReplicateRepudiate // Replicate, 11268 Kindred Artifact: Cloak and DaggerCloak and Dagger, 7377 Enchantment Land: Valgavoth's LairValgavoth's Lair, 2842 Yeah, yeah, yeah, Esper SentinelEsper Sentinel is an amazing card that every deck should play