Blue Thunder T-45

This effect does not specify "and sends it to the GY". It triggers at the end of the Damage Step, even if destroyed after Damage Calculation (either by battle or by effect), as long as it destroyed a monster by battle.

R-BLUE-THUNDER-T-45-001 · Edison

The effect of "Blue Thunder T-45" activates at the end of the Damage Step, when monsters that are destroyed by battle are sent to the GY. If the monster destroyed in battle by "Blue Thunder T-45" is removed from play by "Dimensional Fissure", etc., the effect of "Blue Thunder T-45" still activates.

R-BLUE-THUNDER-T-45-002 · Edison

If "Blue Thunder T-45" is destroyed by a card effect after damage calculation, its effect still activates.

R-BLUE-THUNDER-T-45-003 · Edison

Even while "Skill Drain" is active, the 'Thunder Option Token' cannot be Tributed for a Tribute Summon.

R-BLUE-THUNDER-T-45-004 · Edison