MTG Modern: Blue Tron vs Dredge 

as for hearth elemental, the card seems okay. i think its use case is narrow because your graveyard doesnt really get "locked" in modern as much as it does get nuked/leylined, so that aspect is kinda worthless. its cool being able to have a card waiting in the wings but in the rare instances where i actually played it i would just rather be dredging and if your plan A already failed your plan B (one 4/5) isnt that much better off.

Black Leyline????????? In game 2