Phantom Blaster and Overlord

Proxy card, ''Number 53: Fake-Body God, Heart-eartH''


2 Level 8 DARK monsters.
You can activate one of the following effects; Detach 1 Xyz material from this card: Halve the attack of all monsters on the field, except this card. If you activate this effect, face-up monsters on your opponent's side of the field cannot be destroyed by battle the turn this effect is activated.
Detach 1 Xyz material from this card; This monster gains 400 attack for each monster on your opponent's side of the field. This monster may not attack your opponent directly if this effect is activated (This effect remains even if it's effects are negated and/or it is no longer effected by card effects)

For the record, the effects, I thought up myself, the wording was done by a friend.

Proxy card, ''Number 92: Fake-Body God Dragon, Heart-eartH Dragon''


2 Level 10 DARK monsters.
You can also Xyz summon this card by using 1 Phantom Blaster Dragon as Xyz material. If Phantom Blaster Dragon is not used as an Xyz material, this card loses 500 ATK. If Phantom Blaster Dragon is used as an Xyz material, this card gains the following effects: During your Main Phase 1, you can activate one of the following effects by detaching one Xyz material from this card: This card gains 1000 ATK until the end phase and the ATK of your opponent's monsters are halved.
When this card declares an attack, it is uneffected by your opponent's card effects until the end of the Battle Phase.
(This card cannot attack your opponent directly, even if this card later has it's effects negated and/or is no longer effected by card effects)