前(ぜん)哨(しょう)地(ち)の包(ほう)囲(い)

As this enchantment enters, choose Khans or Dragons.

• Khans — At the beginning of your upkeep, exile the top card of your library. Until end of turn, you may play that card.

• Dragons — Whenever a creature you control leaves the battlefield, this enchantment deals 1 damage to any target.