If an effect causes a creature with changeling to become a new creature type, it will be only that new creature type
The fact that it gains the basic land type you choose is massive, too, since it turns on synergies with cards like Utopia Sprawl, Verges, Checklands, etc
(Counterspell itself would be too powerful by today's standards and has not been printed for many years)
Beyond the Fallout set, Grim Reapers Sprint could see a lot of utilityafter all, how many red decks couldnt benefit from another combat phase
Whenever a creature is put into your graveyard from the battlefield, return it to your hand
On the surface, hes not busted-broken, but with the right tools, youll be ampping up the speed at which you get to recast those spells