Magus Lucea Kanes doubling up of X-cost spells, and the Swarmlord turning your creatures with counters into card draw, means there are some really fun strategies here - Tyranid Swarm is a deck that truly does feel like a swarm, and can give you big creatures to attack with, and plenty of tokens back to defend if youre smart
Dredge is on hand to bring back any crucial lands, and it opens up plenty of interactions that keep The Necrobloom's tokens-and-landfall schtick feeling interesting
Stiltzkin, Moogle Merchant This commander is quite accessible, as it only costs 1 white mana
The problem with that is that Altanak is tormented by the sound of its name
Taking the time to understand the functionality of the Arena platform will not only help you master the rules of Magic: The Gathering, but can be an excellent way of developing a deeper understanding of the game's diverse and shifting meta