Regeneration has passed through several changes in its rulings. It now says that after the regen has been resolved, creature must tap and be removed from combat. This means a lot, and it is quite different from the old MTG ruling: for instance, old cards (just like Clay Statue, and many others) are almost completely obsolete. But it is better to take a modern card to make examples, and questions about it.
If Skithiryx, the Blight Dragon has been blocked by a 5/5 flying creature, his controller has 2 options:
- Leave the dragon fight and deal his 4 infect damages to the 5/5 blocker, but Skithiryx dies too, since its controller has chosen to do not regenerate it; or,
- Regenerate Skithiryx, and therefore remove it from the combat – but this means that dragon isn’t able to deal his 4 infect damages to the flying blocker.
Is all this example correct?