Borderland Explorer [Commander 2018] SPA Corcel Zanjador then sacrifice a permanent

then sacrifice a permanent

You may put any number of permanent cards with converted mana cost X or less from among them onto the battlefield

the City of Traitors did not align with Dominaria

Set: Chronicles Type: Artifact Rare Cost: {4} {2}

how would I know it worked

Borderland Explorer [Commander 2018] SPA Corcel Zanjador then sacrifice a permanentSet: Commander 2018 Type: Creature Elf Scout Common Cost: {1}{G} When Borderland Explorer enters the battlefield, each player may discard a card. Each player who discarded a card this way may search their library for a basic land card, reveal it, put it into their hand, then shuffle their library.