The boss is on a special stage. to get it, complete the wood/nature themed world and if you complete the last boss of the world, there is a 25% cance to get the this stage called "Pugna saeva" (The brutal battle in english) The first thing that will spawn is the Rana tempus terens. After 10 seconds a defence type enemy spawns then after 30 seconds The first as in the first boss of the first world boss spawns. After 40 seconds a fast offence type enemy spawns. after 45 the second boss spawns. after 50 seconds a high dps enemy spawns. After 1 minute, if Rana tempus terens isn't defeated. The base goes kaboom because of Rana tempus terens's attack with it's high damage and high aoe. if you win, there's an 100% to get the Frogg unit.
