1 Tuner + 1+ non-Tuner monsters
If this card is Synchro Summoned: You can excavate the top 5 cards of your Deck, and if you do, you can add 1 excavated LIGHT or DARK monster to your hand, also send the remaining cards to the GY. You can banish 1 LIGHT and 1 DARK monster from your hand and or GY, except this card; Special Summon this card from your GY, but banish it when it leaves the field. You can only use each effect of Chaos Ruler, the Chaotic Magical Dragon once per turn.