Its a very narrow counter ability since it only gets loyalty abilities from planeswalkers, and is best when you stop a planeswalkers minus ability from sweeping the board in some cases (Elspeth, Sun's Champion comes to mind), but at least they lose the loyalty counters as the cost to activate that ability
A proxy is used when a collectible card game player does not own a card, and it would be impractical for such purposes to acquire the card
Ending up down three mana on a discard spell to make the trade isnt ideal, but its probably better than any other trade for Esikas Chariot and about the expectation of losing mana against Goldspan Dragon
If theres a solid two drop, like a 1/3 that Scries when you flash in your Gull, then getting extra value off of Vexing Gull is easy
There are only 250 serialized versions of each guild-leader, which come stamped with a number
This card's effect essentially means "this Digimon can't be chosen as a target of attack by your opponent," which means that if you block with this Digimon, the target of attack can still be switched to this Digimon