yugioh how to effect from spell economics continous spell card Amazon.com: Yu-Gi-Oh! - (AST-089) - Ancient Sanctuary - Unlimited Edition Changing the Game [Continuous Spell]

Grist, the Hunger Tide This scary looking planeswalker card is actually a cute bug - who, yes, did lead swarms of locusts to destroy the food supply of untold thousands, but only because she didn't know that humans had feelings

You could also build around an alternate win condition

Velomachus Lorehold cares about cheating the mana cost of powerful 5 CMC or less instants and sorceries which you don't really have here or do you need to include since Dragons are the high CMC cards you want to cast

Sacrifice after III.) I - The Ring tempts you, then each player mills cards equal to your Ring-bearer's power.II - Destroy all nonlegendary creatures.III - Each opponent loses 1 life for each creature card in that player's graveyard

To battle Lapras ex, you'll need event-exclusive tokens