There are a couple different ways to obtain them, and they can be spent on on a number of things within MTG Arena, including booster packs and cosmetics in the Store
The unique thing with Me is that counters stay on her anytime she changes zones, other than if it would go into your hand or library, though you can always choose not to have it happen if she's your commander
The newer one is Nimble Obstructionist, from Hour of Devastation
Contents: 15 Magic: The Gathering cards 12-13 Traditional Foil cards 5 cards rarity Rare or higher 4 Uncommon cards 5 Common cards 1 Land card Collector Booster-exclusive special treatment in 3% of boosters Collector Boosters are the place for your players to uncover the best finds in the Valley
Control Jeskai Control Theres a couple different configurations of Jeskai in the format, but the most popular is a Control deck that uses Goldspan Dragon and Hinata, Dawn-Crowned to power out a Magma Opus or two a few turns ahead of schedule
Froghemoth Graveyard hate is arriving in the form of a Frog