Serpent of Yawning Depths
Evasion built as a private club: your Krakens, Leviathans, Octopuses, and Serpents can only be walled off by other members of the same four tribes, which almost nobody else runs. In practice that means a 6/6 body that shrugs past most ground defense while dragging every other big fish in your pool through the same gap. The tribal restriction is the design's defining tension: the effect is enormous, but it is deliberately keyed to a creature-type cluster narrow enough that its payoff scales only inside a deck committed to the theme. A single serpent gets the anthem too, so the card is never dead, but its ceiling is a board of leviathans none of which the opponent can chump. That the granting engine is itself one of the tribes it protects is a tidy piece of self-inclusion: the enchantment creature validates the exact strategy it enables. It belongs to a small family of unblockable-by-restriction effects that gate evasion behind a shared keyword or type rather than handing it out flatly, trading universal utility for a payoff that rewards concentration. Outside a sea-monster shell it is a fair-rate blue fatty; inside one it is the reason the archetype has a finisher instead of just a pile of expensive bodies.
