Icaria, First Reaper

Deadly - Units and spells with Deadly kill any unit they damage, regardless of health. For example, a 1/1 with Deadly can kill a 5/5 attacker.

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