In the order the game ranks them, with what it takes to summon each one.
Health 500Biome MeadowsSummon 2 × Deer TrophyPower Eikthyr
Health 2500Biome Black ForestSummon 3 × Ancient SeedWeak to firePower The Elder
Health 5000Biome SwampSummon 10 × Withered BoneWeak to blunt, frostPower Bonemass
Health 7500Biome MountainSummon 3 × Dragon EggWeak to firePower Moder
Health 10000Biome PlainsSummon 3 × Fuling TotemPower Yagluth
Health 12500Biome MistlandsSummon 3 × Seeker Soldier TrophyPower The Queen
Health 25000Biome AshlandsSummon 3 × BellPower Fader
Health 30000Biome Deep NorthSummon 3 × Malicious Blood