can you buy individual cards on mtg arena All Unavailable Currently Arena! : r/MagicArena A Parent's Guide to Magic:

Aerith, Last of the Ancients : Mana: Green (Life), White (Light) and Blue (Water) Legendary creature -- Human Cleric Exalted Whenever one or more creatures deals combat damage to you, put a limit counter on Aerith, Last of the Ancients

Drawing half your deck and losing half your life is always a great deal, and the drawback of it being a sorcery can be rough, but there are many decks that can still make it work

Stolen Uniform Rating: 0/10 Im sure you can cook up some cool scenarios with Stolen Uniform, but I wouldnt bother

1 Sealed MTG Booster Pack - A mix of Collector, Draft, Play and Set boosters from recent sets like Final Fantasy, fan-favorites like Lord of the Rings, and rare, out-of-print expansions

You are very free to look at different directions and strategies that work with your commander, but that aren't made obvious by the commander's keywords or abilities