Hey so, quick question. If I was to use Spore frog sacrifice ability (Prevent all damage that would be dealt this turn) and someone gets an extra combat, does it prevent all damage that turn or does it only prevent damage from the first combat when I sacrificed spore frog?
The effect of Spore Frog's ability applies to all combat damage that would be dealt "this turn" (not just during the first combat phase of that turn). The ability doesn't say, for example, "Prevent all combat damage that would be dealt this combat".
Prevent Damage throughout the turn