Shiva's Aid — When Hraesvelgr enters and whenever you cast a noncreature spell, target creature gets +1/+0 until end of turn and can't be blocked this turn.
Hraesvelgr's last ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack.
2025-06-06 • wotc
Once a creature has been blocked, Hraesvelgr's last ability won't cause it to become unblocked.