mtg arena draft keep cards quick Arena Cube Draft Deep Dive:

Either way, Jeskai commanders usually handle instants and sorceries to maximum effect, and getting a second round of spells for no additional mana investment is really good

Long story short, a first-turn Goblin Welder will often lead to a second- or third-turn loss, except without the need to actually attack

Because it has the rebound, we get to flicker our commander twice putting two counters on creatures we control

This involved a lot of oddball redundancy for Storm with cards like Sentinel Tower, some quirky Eldrazi support, and a pool of cards that allowed certain combos to co-exist in the same deck as well as ways to hybridize combo and control