It's a joke because blue starter is already playing "hard mode".
A silly idea:
Spiked Training Dummy (Tech 1, Cost 1, 2/4)When this deals combat damage to a unit, put a +1 Rune on that unit.(1g or Exhaust): Deal 1 damage to target unit, then put a +1 rune on that unit. Once per Turn"It can be a pain to train"