Just wondering what it exactly does I just have assumed it was like a revive ability that like brought your creature back from the graveyard.
I'd rather hear it from another player than in the rule book and it's confusing jargon
So it acts like a single use shield.
When a creature had a regenerate "shield" activated (you can do it multiple times)
The next time that creature would be destroyed (usually from damage/burn or direct kill spells)
It will prevent that damage and remove the creature from combat. The creature will be tapped as the result of surviving the regeneration process. And the shield will be used up.
I hope that helps.
The rule actually explains it pretty well...
701.12a (http://imtgapp.com/forum/index.php?action=imtg;area=rule;number=701.12a): If the effect of a resolving spell or ability regenerates a permanent, it creates a replacement effect that protects the permanent the next time it would be destroyed this turn. In this case, "Regenerate [permanent]" means "The next time [permanent] would be destroyed this turn, instead remove all damage marked on it and tap it. If it's an attacking or blocking creature, remove it from combat."
Thank you. That. Actually makes a lot more sense after seeing other card effects like {damnation}