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And while you can fill the gaps in your Archer tribal deck with cards like Adaptive Automaton and Coat of Arms, as well as perhaps a way to search up your Doyen, at that point you could basically be any tribal deck

Planar Engineering Landfall is very strong at the moment

In addition to his fight ability, he makes all other hydra creatures 4 mana cheaper, so the turn you cast him (and the turn after) you will be able to flood the battlefield with enormous hydras

Moreover, by tapping seven untapped Merfolk we control we counter target spell, which is not that hard on Merfolk Tribal

If you've already cast Journey to the Oracle from the Command zone in that game, you will then have to pay an additional two mana to cast Jadzi, Oracle of Arcavios or Journey to the Oracle