Except the best aggro deck in the format cares about attacking with all its creatures, big and small: Creatures (25) 3 Rekindling Phoenix 4 Boros Challenger 4 Legion Warboss 4 Goblin Banneret 3 Aurelia, Exemplar of Justice 4 Swiftblade Vindicator 3 Tajic, Legion's Edge Lands (24) Spells (11) As a mechanic, Mentor poses countless ways to approach combat, but at face value, what we know is that attacking with multiple creatures a turn is the place to be
But Brainsurge helps here
Its part of so many cheap, 2-card infinites that it deserves respect but a 2-mana dork that jumps you to 5 mana on turn 3 is a fine floor too
Bruna and Gisela being Eldrazi-fied by Emrakul and melded together into a horrifying amalgamation of angel and Eldrazi is admittedly horrifying
The flying vehicles help with that, plus they provide artifacts for cards like Urza, Lord High Artificer
Worldwaker Helm's first ability applies to all kinds of artifact tokens that its controller creates, not just Map tokens