702.94. Miracle

Miracle is a static ability linked to a triggered ability. (See rule 603.11.) “Miracle [cost]” means “You may reveal this card from your hand as you draw it if it’s the first card you’ve drawn this turn. When you reveal this card this way, you may cast it by paying [cost] rather than its mana cost.”

If a player chooses to reveal a card using its miracle ability, they play with that card revealed until that card leaves their hand, that ability resolves, or that ability otherwise leaves the stack. (See rule 701.20a.)