LEDE-EN088 Aiza the Dragoness of Deranged Devotion
Level 4 FIRE Dragon Effect Monster
ATK 1500
DEF 0
If this card is Special Summoned: You can place 1 Deranged Counter on 1 face-up monster your opponent controls and it cannot be used as a material for a Fusion, Synchro, Xyz or Link Summon while it has that counter. At the start of the Damage Step, if this card battles an opponent’s monster with a Deranged Counter: You can destroy that opponent’s monster, and if you do, both players take damage equal to its original ATK, also destroy this card at the end of this Battle Phase. You can only use each effect of “Aiza the Dragoness of Deranged Devotion” once per turn.

LEDE-EN092 Veidos the Dragon of Endless Darkness
Level 10 DARK Pyro Fusion Effect Monster
ATK 3000
DEF 1700
Materials: “Veidos the Eruption Dragon of Extinction” + 2+ Level 9 or lower Pyro monsters
Cannot be destroyed by card effects, also your opponent cannot target it with monster effects. If this card is Fusion Summoned: You can destroy all Spells and Traps your opponent controls. When your opponent activates a card or effect on the field (Quick Effect): You can send 1 face-up “Ashened” card you control to the GY; destroy that card. You can only use this effect of “Veidos the Dragon of Endless Darkness” once per turn.

Source: X (Twitter)