almost 4 years ago - MTG Arena Admin - Direct link

Bug Fixes

  • Chromatic Sphere activation can no longer be reversed using the undo key once the card has been drawn.
    • Note: This is a mana ability, which means it can be activated as part of the process of casting a spell or activating another ability. If that happens you get the mana right away, but you don’t get to look at the drawn card until you have finished casting that spell or activating that ability (and the action can be undone up until this point). Once you have you have looked at the drawn card (i.e. it's turned face up) you should not be able to undo activating Chromatic Sphere.