How to get frozen daemon?

How to get frozen daemon? I put on tower set, kill creeps 1 minute, 2 - 3 - 10 and nothing happens. What to do? On the tower it is written: kill a creep after wearing the set for at list 1 minute to sacrifice the set for a frozen daemon

Witch items did you use? Because you need to have all 4 items and not any duplicates.

Thank you so much! it works.