Level 1 (event monster) = Level 1 Zombie Lair
Level 2 (event monster) = Level 10 Zombie Lair
Level 3 (event monster) = Level 20 Zombie Lair
Level 4 (event monster) = Level 25 Zombie Lair
Level 5 (event monster) = Level 30 Zombie Lair
Level 6 (event monster) = Level 35 Zombie Lair
Level 7 (event monster) = Level 40 Zombie Lair
Level 8 (event monster) = Level 43 Zombie Lair
Level 9 (event monster) = Level 45 Zombie Lair
Level 10 (event monster)= Level 48 Zombie Lair
Level 11 (event monster)= Level 50 Zombie Lair

Special Event Zombie Lair Equivalence