card that doubles counters mtg Doubling Season · Wilds of Eldraine: Enchanting Tales (WOT) #101 · Scryfall Magic: The Gathering Search it enters with an additional loyalty counter on it if its a planeswalker Doubling Counters : r/mtg

you may also want to check other places where you may get your cards graded, like your LGS, conventions, or in-person grading services

If an exerted creature is already untapped during your next untap step (most likely because it had vigilance or an effect untapped it), exert's effect preventing it from untapping expires without having done anything

This would apply to all counters added until Hardened Scales is removed making it very useful, even if it not played with Sphere Grid Resourceful Defense is another card you will want to get out quickly as it allows you to move counters from a card that leaves the battlefield onto another creature

A creature cant attack unless it has been under its controllers control continuously since his or her most recent turn began