Ymir = event boss, the game's best RESOURCE drop (also refining stones, speed-ups, beast EXP). Mounted, one-round rule. Zero-wound cavalry: L1 23.4M = t11 290k; L2 70.8M = t12 ~560k (small wounds); L3 120.2M = t13 1.064M (0 wounded WITH monster Def -25% debuff, else ~12k); L4 206.4M = t14 1.931M @+1384%; L5 361.3M = t14 1.931M -> ~47k wounded (needs ~3.5M for 0). Shows why against-monster debuffs matter. 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