MTG's Foretell Mechanic (Spoilers)

[Phelphor, of the Deep]

The Foretell mechanic and all it's glory:

Foretell mechanic:
Foretell (N): (During your turn you can pay (2) and exile this card face down. On a later turn, you can cast this card for its Foretell Cost.)

Discuss the mechanic and how we can abuse it.

[Dokutah]

So its like hand and advantage management thing. Making big cards in your early hand dont end up like dead draws. I can see this as a boost to mid range big creature strategy. Welp there also cards that probably has special ETB when cast using foretell 

Ragnar also hint some exile happy shennanigans design