The 4th effect of the trap card doesn't work against red-eyes slash dragon, I activated the effect "this turn, the activated subterror effects cannot be negated" and even so red eyes negated the effect
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anoymous
Cancer against other cancer don't work
anoymous
Activations being negated and effects being negated are different. Final Battle doesn't help with activation negations.
anoymous
Red eyes negate the effect of behemoth in the same turn...
anoymous
You answered your own question.
"This turn, the ACTIVATED subterror effects cannot be negated".