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Empowerment X SPELL Field All Dragon, Warrior, and Spellcaster-Type monsters you control gain 300 ATK and DEF

Specifically, the English version will show the attack name in katakana, while the Japanese and Korean versions will use the English spelling

Lord of the Nazgl Lord of the Nazgl is one of the most popular Dimir commanders judging from decklists posted online

He is also really spot on for the blueprint of what you generally want a walker to do, + to get cards in hand, - to get things out of play and ultimate to win the game

But you could also add the newer Demolition Field and the on theme but slightly worse Field of Ruin

Four duals