"Magic The Gathering Booster Packs Guide: Draft, Set, Theme And Collector's Booster Packs Explained"
These will trigger Valduk all over again, getting you another set of elementals to tango with
Sacrifice after III.) I: Urza's Saga gains " : Add ." II: Urza's Saga gains " , : Create a 0/0 colorless Construct artifact creature token with 'This creature gets +1/+1 for each artifact you control.'" III: Search your library for an artifact card with mana cost or , put it onto the battlefield, then shuffle
Fetch it into play with Master Transmuter or Kuldotha Forgemaster
If you manage to use its -7 ability, you generate a ton of advantage, drawing into new cards and untapping your lands on your opponent's turns as well, to use the new cards you just drew right away