Destroying opponent's creatures with hexproof
All of these cards would work since they do not specifically target any card. A creature with hexproof cannot be the target of an effect an opponent uses, however, it can still be affected by opponent's effects, so long as it is not targeted. A boardwipe will still wipe the  board, including the hexproof creatures, so long as it does not read the specific word "target." Since Wakening Sun's Avatar states "destroy all non-Dinosaur creatures," it will destroy all non-Dinosaur creatures, unless they have indestructible (permanent cannot be destroyed by rules or effects).