Unagi's Spray checks if you control a Fish, Octopus, Otter, Seal, Serpent, or Whale when it resolves, not when it is cast
how would you like to draw cards equal to your commanders power plus the number of lands you control
Specifically, that includes 2 Holo Rares, 2 Reverse Holos, 5 Rares, 200 Energy Cards, and 90 Common and Uncommon Pokmon cards
But Wizards said that the decision to double the cost for crafting historic cards was couched as part of [f]inding a balance for the long-term health of MTG Arena. Executive Producer Chris Cao said that MTG Arena was Standard-focused and that the reason why Historic cards would cost two Wildcards to craft was in order to maintain the games focus on Standard and preserve the health of the game. He explained that Wizards did not want to fragment the player base with too many play options and risk diluting the Standard queues
However, where Origin Forme Dialga VSTAR truly shines is in its VSTAR Power
Commanders that have evasion, ward, draw multiple cards, and can make multiple tokens are top-notch, so this Esper commander should be considered as such