In the mid
game, you want to hit a mature draft by lvl8 or 9. (6) Knights
and another two/three synergistic units are standard, but you can also e.g. go for
(4) Knights + secondary synergies (Demon Hunters, Trolls, Warlocks, etc.) (which is currently the less popular option).
on upgrades in the mid game, your synergies should be able to carry you. Focus
on economy as much as possible. Knights are expensive, so you need to have a
good economy to be able to afford upgrades in the late game. Rolling from early
on and having a lot of gold sitting on your bench is simply not an option if
you want to place highly in the late game.
The late game plan is pretty simple. Play a
standard slow-paced economy game and search for upgrades. Only burn the bank
for rerolling when things get critical – the more time you stay on 50
gold, the more total gold you’ll have in the game, and usually, to upgrade
multiple Knights you’ll need all of it. Three-star units make a big difference.