Strionic Resonator?

[Rasser]

 If you use {Strionic Resonator} on  {Purphoros, God of the Forge} 2 damage triggered ability does it last untill end if turn, end phase, or just one instance.

Also how much damage would be done if  {Thatcher Revolt} was played in this case.

[Keyeto]

If you use {Strionic Resonator} on  {Purphoros, God of the Forge} 2 damage triggered ability does it last untill end if turn, end phase, or just one instance.

Also how much damage would be done if  {Thatcher Revolt} was played in this case.

It's going to be once instance. The Resonator doesn't so much double the ability as it targets a trigger on the stack.

Since the Revolt is going to set off three triggers, you'll get to copy one of them for an extra 2 damage. This gives you a total of 8 damage (6 from the three tokens, and 2 from one copied trigger). Pretty good deal!

RESOLVED

[Rasser]

That's what I thought 😢 thanks.

[Destore117]

You were hoping for 12? that'd be quite nice. 😔