This solo deck was built to tackle the Ringmaker cycle quests that punish drawing cards. The idea is that by playing from the top of your deck, you can maintain effective card draw without triggering any of the retaliatory abilities.
The deck itself is a pretty straightforward Gondor Swarm deck plus Gandalf. It isn't running any of the Gandalf-specific cards, nor are they really necessary. By running only the necessary attachments, you can hope to find a relevant event to play outside of the Planning Phase to add to the card advantage.
As always, Steward of Gondor is a vital piece of the starting hand. Ideally, it's either on top of your deck or paired with Wealth of Gondor, Envoy of Pelargir, or a top of deck Errand-Rider to enable a turn one play.
The events feature some easy plays outside of the Planning Phase in resource generation and combat tricks. Hail of Stones is a personal favorite for maintaining control of the game after stabilizing. Horn's Cry has been effective in neutralizing the turns in which the encounter deck vomits out an onslaught of creatures.
The Pipe, is always a MUST for Gandalf, so he can play the cards that you want. One example, what happened when Feint or Behind Strong Walls was the first card on top? that will slow your entire deck for a round. Use the Pipe