This deck can work like an aggro deck and win before turn 7, but it has descent late game potencial and can win even after turn 18. You wants to go into the board early with it, and attack your opponets face with everithing you have. In the first 3-5 turns, if you have other cards to play in turn 4 and 5, you just burn a copy of each of your forge minions. It's nesessary for Grand Finale, which is one of your late game win conditions, so you need to concider keeping it until turn 7, if you don't realy have to burn it and you did burn at least 2 of your 3 forge cards. Another cool potential win condition is Guise of Phobos. You only burn it, if you have the second copy in your hand too, and you don't have a better card to burn. It's the card what won me my games most of the time. You can make your way trough with it between two blocking minions to your opponets face, and it also gives your minion +3/+0, and the deffending minions -2/-0 (you can use this for better trades too). In most games you don't need to worry about your healh, becouse you have 4 pups, 2 historians, Seraphis and 2 extact life to gain it back. You can also get some value out of Stairvay to Hades (you just put it under your magmataurs, Seraphis, historians or trapezists and the value and damadge dealing is guaranteed). For reach you have your rush minions, gorgon ellys, Seraphis, Oak and guises; you can scilence with amnesia from the historians; against big/single minions you have extract life and crimson pact; against multiple big ones you have Giganto machia; if your opponet blockes with small minions, you have magmataur, and for card draw you have Oak and Ichor feast, and turn of seasons helps too. This deck can defeat valkyries too, I had some victories in that matchup.
Update 05.10.2020
Never mind. They killed historian. :(