It's like someone got their planeswalker to ultimate out an emblem and have that power, unstoppably, for the rest of the game
Its pretty clear to me that these cards prioritized flavor over function
A different build would be focused on blink and creatures that have good enter the battlefield effects and higher toughness than power, like Sea Gate Oracle, Brago, King Eternal, and Wall of Omens / Wall of Blossoms
It shuts down activated abilitiesthink planeswalkers, fetch lands, or combo pieceswithout needing to target anything
Blues free spells is less exciting, owing largely to the fact we already have multiple free counterspells
When Ukkima leaves the battlefield, it deals its power in damage to a target player and you gain that much life