Demonic Index, Unideon (S-BT06/0048EN) (S-BT06)

If a "Wydar Sarkal" monster is on your field, all "Wydar Sarkal" on your field cannot be destroyed or returned to hand and their abilities cannot be nullified by your opponent's card effects.
At the start of each player's attack phase, if three or more "Wydar Sarkal" are on your field, draw two cards, and for this turn, all "Wydar Sarkal" on your field get power+10000, defense+10000 and [Double Attack].