If your opponent have play One Day of Peace and you have Lava Golem and Prime Material Dragon you take +1000 life points here how it goes
One Day of Peace creates the lingering effect "neither player takes damage".
Lava Golem is a mandatory Trigger effect that inflicts 1000 damage during the Standby Phase.
Prime Material Dragon is a continuous effect that changes all effect damage to regain that amount of Life Points.
One Day of Peace does not prevent Lava Golem from triggering, it only prevents damage. Lava Golem will trigger, and Prime Material Dragon will apply.
And you will gain 1000 LP.
One Day of Peace creates the lingering effect "neither player takes damage".
Lava Golem is a mandatory Trigger effect that inflicts 1000 damage during the Standby Phase.
Prime Material Dragon is a continuous effect that changes all effect damage to regain that amount of Life Points.
One Day of Peace does not prevent Lava Golem from triggering, it only prevents damage. Lava Golem will trigger, and Prime Material Dragon will apply.
And you will gain 1000 LP.