ultra pro standard card sleeves Pokemon Energy Darkness Type 65ct Deck Protector Keep your valuable cards safe and germ Card Sleeves: Solid Color Sleeves

You can definitely attack a planeswalker with a myriad creature , as mentioned in the reminder text

All "Flower Cardian" monsters are DARK-Attribute, rendering them vulnerable to anti-DARK floodgates such as "Consecrated Light", "Koa'ki Meiru Drago", "Koa'ki Meiru Doom", and "Shadow-Imprisoning Mirror"

But wait, its ability is like a mini Collected Company, especially if you have many lands in play

Here are a couple of examples of how the trainer avatar will appear on the Trainers Pokmon cards

Unbeknownst to Trey, Kazuma Tsukumo helped Yuma regain his "kattobingu" by using the power of the "Numbers" Yuma collected to break Yuma out of the trance created by Trey's crest

This can be handy for cards like Moltres Ex and Druddigon, who are in from the start to support the benched Pokemon to build up energy and not necessarily to attack