So that is my first blog post and i have some info about this. To make a very excellent push that will be probably be very difficult to kill it.
1. This can work after the 2x speed comes out.
2. To make a very great push, you need of course a win condition. It really recommended to win the game. Example: P.E.K.K.A.
3. Put lots of support. If it cost a lot, it probably required Elixir Collector but its risk since the opponent will have a spell to finish it!
4. Example: P.E.K.K.A, Graveyard, Princess, Wizard, Ice Wizard. It will be very easy to knock out lots of things and still continue put some more supports.