Lava Turtle = event boss (Challenge Lava Turtles). Mounted. Zero-wound / low-wound cavalry: L1 12.4M = t10 145k -> ~2.2k wounded; L2 22.3M = t11 380k / t12 340k (0); L3 74.5M = t12 708k -> ~7k wounded; L4 147.5M = t13 1.5M -> ~7k wounded; L5 225.2M = t14 1.931M @+1384% (0). One of the event bosses that drops Spiritual Beast Scale; 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