Lightshell Duo

Prowess and card selection have always wanted to live in the same creature, and this is a clean answer to why they so rarely do: a spells-matter beater usually pays for its aggression with a fragile body, and a card-selection creature usually pays for its filtering with no clock at all. A 3/4 splits the difference. The toughness survives the small red burn and blocks the two-power aggressive drops that would otherwise trade up on a prowess creature, so it can sit in play as a repeatable threat rather than a one-turn haymaker. The surveil-2 on arrival is the part that rewards the deck it wants to be in: a spell-dense shell fuels prowess but risks flooding on lands or clumping on air, and looking at two cards while bin-ing what you cannot use smooths exactly that variance. Note the sequencing this asks for: surveil happens on entry, before you start casting the noncreature spells that grow it, so the filtering feeds the same turns it will attack in. It is a support piece, not a payoff, built for a tempo-oriented blue deck that wants a body that both threatens and digs. The Rat Otter typing is the only genuinely novel thing on the card, and it is doing flavor work, not mechanical work.