Sarkhan, Fireblood
Legendary Planeswalker — Sarkhan
+1
: You may discard a card. If you do, draw a card.
+1 : Add two mana in any combination of colors. Spend this mana only to cast Dragon spells.
-7
: Create four 5/5 red Dragon creature tokens with flying.
Grzegorz Rutkowski
Core Set 2019 (M19)
• #154Rulings
A "Dragon spell" refers only to a spell that has the Dragon subtype, regardless of its name. For example, Dragon's Hoard isn't a Dragon spell.
(wotc • 2018-07-13)
Because it's a loyalty ability, Sarkhan'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.
(wotc • 2018-07-13)
Rulings
A "Dragon spell" refers only to a spell that has the Dragon subtype, regardless of its name. For example, Dragon's Hoard isn't a Dragon spell.
(wotc • 2018-07-13)
Because it's a loyalty ability, Sarkhan'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.
(wotc • 2018-07-13)