
When this enchantment enters, you become the monarchthe monarchThe monarch draws a card at the end of their turn. A player whose creature deals combat damage to the monarch becomes the monarch instead..
At the beginning of your upkeep, exile the top card of target opponent's library. You may play that card for as long as it remains exiled, and mana of any type can be spent to cast it. If you're the monarchthe monarchThe monarch draws a card at the end of their turn. A player whose creature deals combat damage to the monarch becomes the monarch instead., until end of turn, you may cast a spell from among cards exiled with this enchantment without paying its mana cost.
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Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.