I want to know what viability of this card, because I think it has great potential due to the realease of Sky Field. So far I've found a few good cards that could help this deck be powerful.
-Target Whistle: can fill an enemies bench when Sky Field is up, making then have to use the extra space making you hit for bigger numbers.
-Miltank: can finish off attacks from Shiftry on big EX's and also takes only one colorless.
-Sky Field: To obviously allow Shiftry to attack for even more damage.
-Robo Sub: Takes up bench space without putting down actual prize Pokemon for your opponent.
If you guys can think of anything that could go well with the card, I'd like to hear your thoughts. I think the main thing holding Shiftry back is speed, and while Big Plant Forest can speed up evolution you'll still have to use Sky Field for big kills.