Misty's Wrath
Trainer
Look at the top 7 cards of your deck. Choose 2 of those cards and put them into your hand. Discard the rest.
Gym Heroes
#114
Forest Guardian
Trainer: Supporter
Shuffle your deck. Then, look at the top 7 cards of your deck. Choose 1 of those cards and put it in your hand. Shuffle the rest into your deck afterward.
Aquapolis
#123
Well, these two trainers are both the same and differant. Both let you see the top 7 cards of your deck (except FG shuffles your deck first) and then choose 1 or 2 to add to your hand. They differ, however, in what happens to the remaining cards.
Pros for Misty's Wrath:
Burn through the top 7 cards of your deck and picking 2 is pretty good.
The discard effect is helpful for something like Movie Promo Mewtwo (drop 1 Psychic and 1 other energy into the discard on your first turn and then Energy Absorbtion them onto Mewtwo) or any other cards that draw from the Discard pile.
Cons for Misty's Wrath:
Discarding 5 cards is a pretty steep price for getting just 2 partially random cards out of your deck.
Pros for Forest Guardian:
Checking the top 7 cards and getting 1 card is pretty nice. Not great but nice.
The remaining cards are shuffled rather than discarded. A MAJOR advantage over MW.
Shuffling can help if you're in a bit of an Energy Crisis.
Cons for Forest Guardian:
Only 1 card compared to Misty's 2.
Supporter
Deck Strategies:
I'd run 1 or 2 of each. Misty's Wrath is better in the early game where you can stand to discard 7 cards. Forest Guardian, although not allowing you to pick as many, will keep those extra cards in your deck. Always a plus.
Final Thoughts:
Misty's Wrath is an alright card. Drawing 2 chosen cards, even though it's slightly random, is always good early game. The discard is a little to costly to run more than two of. 7/10
Forest Guardian isn't better by much. Even though it's a card less, you keep those extra six cards in your deck. I'd run two or three if I had the cards. 7.5/10