This means that the battle card type wont show up in all (or even most) sets, but its a tool that can be used by the games designers if it fits a sets flavor or mechanics
Steel cards Galactic Council Chamber comes with an interesting ability that prevents your opponent from challenging it while an Alien or Robot character is located there
Five mana isnt a great rate for one counter on everything (I mean, thats what Cathars Crusade costs and you never need to pay anything beyond that for way more counters), but go-wide payoffs are limited outside of green, and if youre furiously flickering enough that you have an army of tokens, it wont take much for those tokens to become a real threat
Black Black is known for being able to do anything for a price (except destroying artifacts)
Its combination of ramp, massive creatures, and high-value cards makes it a standout precon for any Commander collection
Lastly, Talrand is one of the more budget-friendly Commanders since you dont need hallmark spells to make the strategy work