Golem = event boss (Golem Challenge). Relative strength: L1 < Griffin (but more wounds), L2 between Griffin and Ifrit, L3 ~Kamaitachi (fewer wounds), L4 ~Fafnir, L5 slightly < Phoenix. Mounted. Zero-wound cavalry: L1 12.4M = t11 120k; L2 22.3M = t11 400k / t12 350k; L3 74.5M = t12 820k / t13 950k; L4 147.5M = t14 1.595M -> ~6.6k wounded; L5 225.2M = t14 2.26M. Drops refining + research stones. Doctrine (all normal/most event bosses): fight with only the single highest tier of MOUNTED cavalry, one wave, to one-round-kill for zero wounds; buff mounted attack first, count second. Skill books: Mounted Attack Against-Monster Lv4, Mounted Attack Lv4, March Size Lv4. Add an AGAINST-MONSTER debuff (not a normal debuff), e.g. Dragon Equipment Set (4); monster Def debuff caps at -50% (5x set). In a rally only ONE joiner needs the against-monster debuff -- it does not stack across joiners. Monarch Talent Lv6 'Mortality' halves wounds. Rally-join = 1 general + 1 mounted troop (loot-agnostic).
Original research source: Evony Guide Wiki