I think I may have been playing this wrong. In Dan's report he says:
T4: Matt with Flash
Game 2: I mulligan into a solid opening of Orchard, Recall, Lotus, go, but he clearly is content to sit back and assemble a million pieces of disruption. He finally goes for it against my full grip and ends up Pacting twice (both REBed) but I have the extra Force. He passes the turn and I pass back expecting him to lose to Pact triggers. He instead untaps and casts a second Flash during his upkeep. Luckily for me the card I drew during my turn was Krosan Reclamation. I let him start to combo out again and fizzle Reveillark's trigger with my Reclamation and he dies to the Pacts.
If he REDed and Forced the Pacts, why are there pact triggers? I thought the cost didnt have to be paid unless the spell resolved.
j