Illvoi Infiltrator

Unblockable-on-demand stapled to a card-draw trigger is one of blue's oldest tempo engines, and the twist here is what gates the evasion: not a mana investment or an equip step, but a spellcasting count. Two spells in a turn and the 1/3 walks in for a card. That condition reframes the creature entirely. It is not a beater you protect and swing with every turn; it comes online in the turns you were already committing to instants and cantrips, and it stays home the turns you are not. The toughness matters more than the power for exactly this reason: a 1/3 survives most incidental early-game combat and sweeper-adjacent pings, holding the ground until a spell-dense turn arrives to convert it into evasive damage. The draw trigger feeds the same engine that turns the evasion on, so a connected hit can chain into another spell and keep the count live. The design lives in that loop rather than in raw stats: a low-impact body that rewards a deck already built to flood the turn with cheap spells, and does nothing for a deck that is not. Its ceiling is dictated by how many spells the rest of the list wants to cast anyway, which is the honest cost of stapling evasion to a threshold instead of paying for it directly.