Guild Bouncer

Draft Guild Bouncer face up. When you draft
Guild Bouncer, if you haven't already chosen a
guild, choose and note a guild of Ravnica.
Instead of drafting a card from a booster pack,
you may reveal that your booster has no cards
with your guild's colors. If you do, remove your booster pack from the draft, add a new booster
pack to the draft and draft one card from it, then
turn Guild Bouncer face down.