Shinestriker

Vivid asks a strange question of a mono-blue card: how many colors sit on your battlefield, when the creature carrying the trigger is single-colored? The answer is a deckbuilding puzzle rather than a rate. Left alone in a straight blue deck, this draws one card on entry, a flying 3/3 for six mana and little else. But the payoff scales with a board's color spread, so the design pushes toward mana bases and permanent suites that would otherwise have no reason to splash: a two-color shell replaying the enters trigger for two cards, a five-color pile turning it into a windfall. What makes the design bite is the mismatch: the flying body wants to live in the exact decks that struggle to justify a six-mana blue draw spell, while the decks that trivially field four or five colors on the board are the ones that make the trigger sing. Vivid measures the width already sitting on your permanents rather than the tempo you are spending now, which flips the usual card-advantage math: instead of paying more mana for more cards, you pay for a snapshot of how greedy your board is. The card is a reading of a board state as much as a threat, and its ceiling is written entirely before it ever resolves.