Thirty-first Floor: Hero Beast, War Stomp, Rebirth (240-second cooldown)
Thirty-second Floor: Mammoth Horned Beast, Magic Theft, Magic Control, Magic Immunity, Magic Retaliation (Burns 10k mana per attack)
Thirty-third Floor: Dragon Sea Turtle Beast, Critical Hit, Hardened Skin, Spiked Shell (100% reflection)
Thirty-fourth Floor: Mountain Lizard Fire Beast, Sacrifice (seems not to activate), Rain of Fire (30k damage per tick, lasts 6 seconds)
Thirty-fifth Floor: Spirit Thief Cone Beast, Critical Hit, Self-add 1000 Damage
Thirty-sixth Floor: Blue Harp Dragon Beast, Critical Strike (about 25% chance for 6x multiplier), Fierce Break (Reduces attack by 50%, movement speed by 75%, and attack speed by 50% for 20 seconds), Lightning Chain (1000 damage, decreasing over 16 units)
Everyone probably hates the invisible bird on wave 23 the most, right? The most annoying is probably the magic-sucking cow on wave 32. And the most feared is likely the blue bird on wave 36.