In ascending order you would walk through Japanese, then Chinese, then Korean and Russian in terms of scarcity and value for US collectors
Kaalia of the Vasts versatility beats out Edgar Markov for the title of best Mardu commander, but only by a smidge
Creatures (6) Arboreal Grazer x4 Subtlety x2 Instants (18) Lightning Bolt x3 Counterspell x4 Planar Genesis x4 Expansion / Explosion x3 Nexus of Fate x4 Sorcery (4) Gates Ablaze x4 Enchantments (7) Guild Summit x4 Wilderness Reclamation x3 Lands (25) Azorius Guildgate Breeding Pool x2 Gruul Guildgate x4 Island Izzet Guildgate x4 Misty Rainforest x2 Scalding Tarn x2 Simic Guildgate x4 Steam Vents x2 Thran Portal x3 Sideboard (15) Consign to Memory Haywire Mite x2 Spell Pierce x2 Swan Song Damping Sphere x2 Dismember x2 Gatebreaker Ram x4 Force of Vigor I won't pretend that this is the most competitive Modern deck in the world, but it's a riff on a deck I loved playing in the Standard, and it gives you a pretty good idea of how a gates deck wants to play
After all, you might get an ultra-rare card once you open your first booster and not everyone is against a little celebration
The other ability is where things get interesting, though
Full of high-powered reprints and fan favourites, Double Masters contains the some of the most beloved - and feared - Magic: The Gathering cards ever created.