Card sounds may differ from in-game as they get updated.
Aegis - Aegis protects a unit or player from one enemy spell or effect. It doesn't block friendly effects, nor does it stop battle damage from Killer attacks, Relic Weapons, or normal attack and blocking.
Silence - Remove all text from a card and its attachments.
Tribute - Cards with Tribute have an additional effect when played if a unit went to your void this turn. This includes units that die or units you discard from your hand and deck.