Evil Thorn

Edison Card Text
You can Tribute this card to inflict 300 damage to your opponent and Special Summon up to 2 "Evil Thorn" (s) from your Deck in face-up Attack Position. Those monsters' effects cannot be activated.
Raging Battle • 2009-05-12
No targeting
No Damage Step effect
Banlist • Unlimited
Interactions
If Debris Dragon revives a monster like Evil Thorn/Lonefire/Rescue Cat, do their effects resolve?!
Debris Dragon Special Summons a monster whose effects would activate on the field.
No. Debris Dragon negates effects that activate on the field, so those effects resolve negated unless the monster leaves the field and returns as a new object.
Rulings
edisonformat.net
●Tributing “Evil Thorn” is a cost to activate its effect.
●If you activate the effect of “Evil Thorn,” inflicting damage is mandatory but Special Summoning is optional.
●If you can’t Special Summon, due to a card effect, you can still Tribute “Evil Thorn” to inflict damage.
●The timing on the 2 effects of “Evil Thorn” (inflicting damage and Special Summoning) are simultaneous. The effect ends after you have done both. If you have no “Evil Thorns” in your Deck, you can still Tribute “Evil Thorn” to inflict 300 damage.
●The effects of the Special Summoned “Evil Thorns” are negated as long as they remain face-up on the field.
edisonformat.com
Tributing “Evil Thorn” is a cost to activate its effect.
If you activate the effect of “Evil Thorn,” inflicting damage is mandatory but Special Summoning is optional.
If you can’t Special Summon, due to a card effect, you can still Tribute “Evil Thorn” to inflict damage.
The timing on the 2 effects of “Evil Thorn” (inflicting damage and Special Summoning) are simultaneous. The effect ends after you have done both. If you have no “Evil Thorns” in your Deck, you can still Tribute “Evil Thorn” to inflict 300 damage.
The effects of the Special Summoned “Evil Thorns” are negated as long as they remain face-up on the field.