Here's the Scenario. Have an artifact pile with Unsuccessful active. I play from hand during my prep phase Temple of Dagon:
Temple of Dagon
Type: Fortress • Brigade: Multicolor • Ability: None • Class: None • Special Ability: Protect Philistine Evil Characters in your territory from capture. • Identifiers: Holds one active Altar of Dagon • Verse: I Samuel 5:2 • Availability: Priests booster packs (Rare)
I then activate Altar of Dagon, The question is since I have to deactivate Unsuccessful to activate altar of dagon(right ?) can I then activate a second artifact on my artifact pile?