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From the start, it's probably easiest to play as Rampart. The main thing is to have the tree. Upgrade the elves, then buy more of them along with their buddies and rush forward. Someone mentioned taking trees and dwarves. In my humble opinion, taking them is nonsense. With how slow they are, you should leave them in your own castle for defense. But elves + buddies + tactics can rush almost any guard. Recently I played online against a Castle using Rampart as same-side. After I defeated the opponent on the third or fourth week, he skeptically told me that the fact that I took a neutral castle guarded by a group of wyverns at 1.2.1 made him suspicious. Of course, I got a bit angry at first because I hate such hints. I replied to him that I beat them using 32 upgraded elves + about fifty buddies, and only lost about ten buddies (without a spellbook). It's done very simply. You place the buddies one by one so they cover the elves in two layers and simply shoot from cover. In principle, this is how I mostly rush with just elves and buddies; when I upgrade and build pegasi, I take them for the first move (if the neutral is faster than elves and especially if it's a shooter). I only take the main army when taking the Dragon Utopia and for the final encounter.