Ghostform

Two mana, two creatures connect this turn, and the spell is spent: the whole effect lives in one combat step. Evasion-as-spell has a long lineage in blue, but the design choice here is to make the grant a sorcery, which means it has to be committed before attackers are even declared. That puts it firmly in the pre-combat planning slot rather than the reactive-trick slot: it is not a mid-combat surprise, because "can't be blocked" has to be in place by the time blockers go down anyway, so there is no version of this card that rescues an attacker after blocks are already locked in. What it buys instead is reach across two bodies at once, which points it squarely at strategies that want damage to land rather than win a fight: a pile of small, hard-hitting creatures, or a single threat carrying a payload the controller needs to deliver. The targeting is generous (it can hit an opponent's creatures too, an occasional political or sacrifice wrinkle), but the spell's real identity is as a finisher's accomplice, the line that turns a stalled board into a lethal swing. It asks the deck to supply the threat; it only guarantees the threat arrives.