Stifle [Scourge] Vanguard Series Abzan sentries unfailingly guard the

Abzan sentries unfailingly guard the stronghold gates

Discard this card: Search your library for a Plains card

Whenever you roll {CHAOS}

Set: Aether Revolt Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {6} Whenever Gonti's Aether Heart or another artifact enters the battlefield under your control

but I didn't expect it from the building itself

Stifle [Scourge] Vanguard Series Abzan sentries unfailingly guard theSet: Scourge Type: Instant Rare Cost: {U} Counter target activated or triggered ability. (Mana abilities can't be targeted.) "If I wanted your opinion, I'd have told you what it was." Pemmin, Riptide survivor