Thread:LionHeartKIng/@comment-16256620-20170623024110/@comment-16107481-20170623191611

You need a Mirror monster on the field and 2 other monsters in your hand, field, GY or banished whose Level follows the Level Reflect Formula: For example, in "High Tidal Dragon", you will need a Level 2 Mirror, a Level 4 monster and a Level 6 monster.

Also, notable is that their Summon is not treated as a Special Summon or as a Normal Summon, thus it can be bypassed by some Solemns (if not all).