When "Slifer the Sky Dragon's" attack misses, it hits the skyline causing lightning bolts to shoot down from the sky. This reactivates the power levels of Seto's blimp, allowing Mokuba to call a helicopter for Joey and activating the broadcast of the Duel on Battle City's giant screens.
Activates Continuous Spell Card "Spell Sanctuary", allowing both players to add a Spell Card from their Deck to their hands: Yugi selects "Change of Heart"; Seto selects "Soul Exchange". From now on as long as "Spell Sanctuary" remains in play, both players can activate any kind of spell card during their opponent's turn, as long as it is face down.
Activates Spell Card "Soul Exchange" so he can tribute Yugi's two monsters (NOTE: in the real game, "Soul Exchange" lets you select one monster on your opponent's side of the field and you can tribute the selected monster but you cannot conduct your Battle Phase if you activate Soul Exchange), he intends to Tribute them all in order to summon "Obelisk the Tormentor" to the field.