Its common to find these effects stapled to creatures themselves, which are colloquially known as aristocrats thanks to a heater from Tom Martell
If the target creature is an illegal target as Sunshower Druid's ability tries to resolve, it won't resolve and none of its effects will happen
The Sword & Shield block was no different, with the big fire lizard popping up on many valuable cards across many disparate sets
Sinistcha 022/167 TWM 70 HP (Grass) [G] Put 4 damage counters on your opponent's Pokmon in any way you like
Other areas of interest to younger collectors include toys and contemporary art, but as times and fashions change, new potential arises
Using the Adventure side is likely to augment one of your early game creatures and make it more of a problem, and then you just sort of have this Hill Giant sitting in your hand, ready to come into play as soon as you dont have anything else to do with your mana