I can't imagine opening a Conspiracy pack looking for powerful cards in the common and uncommon slots
This Monke has saved me so many games I cant even count them on my hand
Two-Mana Goblin Instigator is the best fit for Goblins as an archetype in Standard because youre either going to be interested in pumping your Goblins or sacrificing them, and either way, two Goblins in one card for two mana is exactly what youre looking for
In fact, they are legal in any format where they're already legal
In conclusion, while these last three spots are pending a gameplay verification, I felt the most confident putting Anticausal VestigeAnticausal Vestige as the most powerful warp card, simply because I couldn't see any downside
But Olivia Voldaren, a powerful vampire aristocrat, agreed to help Sorin in exchange for Avacyn's death