Managing stacks without Resurrect, Sacrifice, Gift, Hypnotize

[Vilk]

I'm trying hurry so I try minimize walk to refill stacks but I feel it tough now my mage is level 6 and worse I don't have anymore enough horsemen to continue use them.

What good tricks to manage stacks when you don't have yet Resurrect, Sacrifice, Gift, Hypnotize? I'm using Cardinal and that helps. But not much more, healing is now not really useful. I have various choices of units.