One leading contender was a landfall theme to play up the battle for Gaia and its Lifestream, but that ended up feeling too ambiguous
Cephalid Coliseum (Ext, S, Block) While not usable before threshold is achieved, and quite painful until then, the Coliseum provides a quick and easy way to filter your hand
The next milestone is finding a few draft archetypes that they feel comfortable playing
Brago is also notably a Spirit which means he benefits from Essence Flux and other Spirit tribal cards, many of which have powerful enter the battlefield effects
Theyll definitely have some impact - Baron Rivalry and Thrum of the Vestige are covers of very powerful cards - but not an overwhelming amount
Able to come out on turn three with his Shift ability, this Steel card is crazy good at combat