mtg core 19 booster box Magic: The Gathering Set 2019 40 basic lands (20 traditional foils and 20 nonfoils) Magic the Gathering 2019 Core

So, no you cant convoke and sac creatures for mana to pay for this

In terms of pace, WU looks decidedly midrange

Each mode includes an additional cost

The fact is, this card completely shifts the attention of the warp mechanic: We're no longer looking at a card with a strong effect triggered when it enters, but rather it counts on leaving the battlefield over and over again

(2025-06-06) Once the number of lore counters on a Saga is greater than or equal to the greatest number among its chapter abilities, the Saga's controller sacrifices it as soon as its chapter ability has left the stack, most likely by resolving or being countered

They are not legal in official tournament play and are primarily used for practice, learning, or in casual gaming environments where players agree on their use