Deepway Navigator

Two abilities pointed at the same combat step, pulling in opposite directions. The untap-on-entry line is a tempo trick wearing a creature costume: flash it in during your opponent's turn to refresh a Merfolk crew that already tapped out to attack, so the team can commit to the swing and still have bodies standing to block. That is vigilance-by-proxy delivered off a two-mana flash body, and few Merfolk have offered it at instant speed. The second clause is where the card picks a plan: the +1/+0 anthem only switches on once three Merfolk have already gone to the red zone, so it contributes nothing to building the swarm and everything to closing out one that already exists. That ordering is the design's spine. It cannot manufacture the board it rewards; it can only cash in a wide attack, then untap the crew to hold the ground it just cleared. Flash ties the halves together, and the timing you choose decides which card you are holding: cast it on your own attack step and it is an aggressive team pump; cast it on your opponent's and it is a defensive ambush that resets a tapped-out board into fresh blockers. A tribe built around tapping opponents down and slipping through finally gets a piece that pays off attacking wide instead of tempo-ing narrow.