Cross Duel has eccentric deck combinations due to many Monster, Spell, or Trap cards being utilized in different ways when compared to the franchises trading card game counterpart
Here we have a card that does a pretty impressive ability when played lowering all of your opponents strength stats until your next turn
Having this kind of effect on a land is solid, not to mention uncounterable (watch out for that land destruction, though)
If the card has any mandatory additional costs, such as that of Thrill of Possibility, those must be paid to cast the card
To ensure a bit of consistency, the deck was given Light Barrier , a Field Spell that lets you pick which effect you want to apply without needing the cointoss, and that was eventually followed by Arcana Force XV The Fiend which can discard itself to nab a copy of Barrier from your Deck or GY