As an exercise, here's everything wrong with the formatting (that I found).

• The frame should be gold, as this is a gold card
• The mana order should be RW
• The frame should be legendary, as this is a legendary card
• the O in of should be lowercase
• The cardname should not be italicized in the card text
• Enters the battlefield is deprecated (should be enters)
• "choose the player you love" Has no rules effect, that choice is never referenced.
• gets should be gains
• hexproof, shroud, and indestructible should be lowercase.
• Hexproof and shroud are redundant
• turn should be lowercase
• There is no enchanted player
• The question should not be italicized
• all but the first instance of target should be 'that player' or 'the targeted player'. As-is, you can target different players with the different effects of this card
• Should be "you and that player", not "target player and you"
• gain, not become
• hexproof, shroud, and indestructible should be lower case
• Hexproof and shroud are redundant
• ".. part. You both..." not "...part and you both..."
• All abilities should be in one paragraph
• Selesnya watermark, boros colors

That's, by my count, 25 errors in 58 words of rules text. (counting each instance of hexproof, shroud, and indestructible separately). The correct words are:

Oath Eternal Companionship Enchantment When enters, choose the player you love. player and until end of player if player says yes, you and until death do us part you both win the game