This is a powerful card, and you can abuse it by playing down multiple paths
This design choice aligns well with the tropical theme of the Alola region, where Toucannon debuted
This is essentially the Magic Arena variant of Commander/EDH, the big differences include the ability to put a planeswalker into the command zone, 1v1 matches, a starting life total of 25 and the only legal cards are the cards in Historic, which includes all cards on MTG Arena except for a few banned cards (looking at you, Oko, Thief of Crowns)
Its the purest form of discard, meaning the core strategy is to discard, not just work as a supporting role to help you dominate the board
Those will get removed
Aetherworks Marvel is a very compelling permanent to untap Not a Constructed-worthy rate right now, to start with