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
Whoever has taken the most Prizes at the end of the match is declared the winner
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
[c]Edict[/c]s are a great example of this, but you can find this ability on permanents as well
If the card has any mandatory additional costs, such as that of Thrill of Possibility, those must be paid to cast the card
Next you have Speaker of the Heavens which lets you tap it to create an Angel token, provided you have 7+ more life than your starting total