If you're playing an aggressive or midrange tribal deck and you're only including sixteen creatures, you have to ask yourself: "Is it even worth playing all of these tribal cards in the first place?" If, for example, you only have enough creatures to have a couple in play at any given time, you're not maximizing your tribe's abilities
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But they exist anyway, like postcards from an alternate Pokmon universe where everything is just bigger for no reason
Affinity (if you count this as a tribe) Many wouldn't consider Affinity as a tribal deck to which I could pedantically argue that Artifact was the tribe and it is just a type rather than a subtype
It's ultimately much more fair though, since it's tied to a tap ability and only targets legendary creatures, unlike Breach, which let the reigns loose with virtually no restrictions at all