It's worth noting that 'stat growth on Rad gain' has the potential to be extremely nutty.
Modern Reactor gives 1 Rad at the start of the turn and 1 Rad at the end of the turn. This isn't actually a nerf over 'gives 2 Rads at the start of the turn', given our synergies. It's a buff. Every single Rad gain trigger triggers 'stat growth on Rad gain'.
If we look at a case like '2 Old Reactors, 1 Modern Reactor' that's 4 triggers per turn, and that's easy enough to achieve.
Additionally, Polluted Wasteland and Mountain effectively grant X*Y (Wasteland count * Mountain count) individual Rad generations per turn, although the tokens created can't attack until the turn after they're created, so there's some minor windup.
The Wasteland and Mountain are both Common, too. While the Mountain will eventually go for a stroll and join the other team, it wouldn't help the enemy that much, especially with Godzilla's trample.
All in all, it would take us a good few turns to get to the point of having many Rad gain triggers per turn, but all those effects that go '+10 Strength, +10 Vitality, every time you gain a Rad' will quickly snowball to the point of massive durability and strength gain per turn.
All of which can be neutralized with clever effects, but rapidly growing bruisers are something, I guess.