You can get it every time you open a Pack, as well as for completing missions, and as a buyable resource during certain events , with players able to spend Event Tickets on them
$0.49 June, Bounty Hunter Avatar: The Last Airbender $1.49 Yue, the Moon Spirit (0338 - Showcase) Avatar: The Last Airbender Variants $2.49 Azula, Cunning Usurper (0303 - Borderless) Avatar: The Last Airbender Variants $2.49 Momo, Friendly Flier (0317 - Borderless) Avatar: The Last Airbender Variants $2.49 The Earth King (0344 - Showcase) Avatar: The Last Airbender Variants $1.49 Secret of Bloodbending Avatar: The Last Airbender $3.49 Secret of Bloodbending (0337 - Showcase) Avatar: The Last Airbender Variants $1.99 Katara, Water Tribe's Hope (0351 - Showcase) Avatar: The Last Airbender Variants $0.49 Fancy Footwork Avatar: The Last Airbender $0.49 Uncle Iroh Avatar: The Last Airbender $0.49 Haru, Hidden Talent Avatar: The Last Airbender $5.99 Secret Tunnel (0392 - Extended Art) Avatar: The Last Airbender Variants 0 results found
I have seen the following messaging from various MTG finance folks as far as when to buy standard cards after rotation: Right before rotation, right at rotation, a week after rotation, a month after rotation and so on
2021-06-18 If a card with no mana cost is given an alternative cost equal to its mana cost (by Snapcaster Mage, for example), that cost cannot be paid and the card cannot be cast this way
