The best threats are creatures again (Uro, Urza, and Primeval Titan) and Path to Exile and Icefang Coatl are both present in large numbers, ready to invalidate your size advantage
I think both Sauron and Saruman are equally qualified to run the precon stock list
When blue-red plays with artifacts, it typically cares about a mass of them for cards like Urza, Lord High Artificer or Brudiclad, Telchor Engineer, so getting two artifacts for every one you cast is worth the investment
Garnet, Princess of Alexandria (FIN-222) - FINAL FANTASY Garnet, Princess of Alexandria (FIN-222) - FINAL FANTASY Wizards of the Coast Lifelink Whenever Garnet attacks, you may remove a lore counter from each of any number of Sagas you control
In other words, Highland BerserkerHighland Berserker is going to drive some damage through, but probably isn't going to be a revelation at two mana