The weakest performing archetype, GB Counters, seem to suffer from a lack of strong common payoffs/identity
Unfinity , however, was released in black border with two types of cards in the set: cards that have the acorn symbol are considered casual cards (exactly as if they were a silver-bordered card), and those that dont have the acorn symbol arent, and can be played in sanctioned/competitive formats like Commander, Pauper, Legacy and so on
Buried Alive and creatures like Oriq Loremage do a similar job, but no ones as mana-efficient as Entomb
For example, a Bird that enters the battlefield under your control with one +1/+1 counter on it won't receive an additional +1/+1 counter
Tron may accelerate out its threats quickly, but unless that threat is Wurmcoil Engine, you don't actually win the game very quickly
If you're interested in Magic: The Gathering's Commander (a.k.a