Lands have a mana cost of 0
Mono red decks will have a hard time setting up for this combo, as they dont have reliable ways to find the pieces, but if you add blue or black, tutors like Trinket Mage and Vampiric Tutor can help you assemble the pieces without slowing you down, ensuring you are able to keep up with early mana rocks and ramp spells with ease
If you do, Thief of Existence gains "When this creature leaves the battlefield, target opponent draws a card." Thief of Existence's triggered ability will resolve before Thief of Existence does
At 3 mana, it should come out a bit earlier than your other angels so that you can best take advantage of it
Magic: The Gathering - Dominaria Remastered - Draft Booster Box Magic: The Gathering - Dominaria Remastered - Draft Booster Box Wizards of the Coast Please Note: This product is brand new & factory sealed
At four mana, he can sit at the top of your mana curve, and if you manage to drop a haste enabler such as Goblin Warchief, you can start doubling your goblins straight away (which then also have haste to attack the turn they enter)