I would say just go red blue and drop white. Entreat the Angels isn't that great, even for its Miracle cost, and you probably don't even want to cast Terminus if you have Delver (your only win condition) on the board. Add Serum Visions, Remand, More Bonfire, Temporal, Condescend, and more direct damage like Lightning Bolt. You also need another win condition besides Delver, and Crystal Ball is pretty lame too.
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The first deck works because it's legacy where top is not banned, and they have brainstorm to put back the miracle cards that you drew in your opener or that you drew at an inopportune time. The second deck is block constructed with a much much smaller card pool and a slower format.
If you can figure out a way to replace top and brainstorm it would be a viable deck. The thing with top is that it lets you draw the miracle on your opponents turn with no mana activation. Plus top lets you set up the soft lock with counterbalance (which is legal in modern).
The best instant speed scry card is crystal ball, which is terrible compared to top. So it doesn't seem like this deck will work.
But if you still want to try it, i'd replace telling time with see beyond. See beyond lets you shuffle back an expensive miracle card and can trigger miracle on your opponents turn.
Your deck has 38 non land cards. You're probably going to want 25-26 land. The legacy deck has 23 lands and they have way better card filtering, and the Block deck ran 27.