Summon: Kill an enemy unit without Flying. The cursed player can't play units with that name while you have Avigraft.
Entomb: They play a 3/3 Valkyrie.
Card sounds may differ from in-game as they get updated.
Entomb - The ability of a unit with Entomb will activate when it dies. This combines well with effects that sacrifice units as a cost.
Flying - Flying units can only be blocked by other flying units, but can block ground units normally. They can also be directly attacked by Killer units and Relic Weapons.
Summon - Does something when played