Because it's a loyalty ability, Chandra's second ability isn't a mana ability. It can be activated only any time you could cast a sorcery. It uses the stack and can be responded to.
12-07-2019
wotc
Chandra's first ability affects only Elementals you control at the time it resolves. Elementals you begin to control later in the turn won't get +2/+0.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
Anna Steinbauer2019-07-12
