Twilight Prophet (Promo Pack) [Rivals of Ixalan Promos] Raging Tempest its controller adds an additional

its controller adds an additional one mana of that color

"There is always more to give

+1: You may sacrifice a Vampire

and destroy all those monsters with 1500 or more ATK

And at his passing

Twilight Prophet (Promo Pack) [Rivals of Ixalan Promos] Raging Tempest its controller adds an additionalSet: Rivals of Ixalan Promos Type: Creature Vampire Cleric Rarity: Mythic Cost: {2}{B}{B} Flying Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) At the beginning of your upkeep, if you have the city's blessing, reveal the top card of your library and put it into your hand. Each opponent loses X life and you gain X life, where X is that card's mana value.