For example, the following situation:

E1 E2 (enemy minions)

......................................

B C (my minions)

//////////////////////////////
A (in hand)


if bot calculated card to be played like:

A->BattleField, A->B (A use battlecry on B) , BxE1 (B attack E1)

But you want to A set battlecry on C, then you can add a rule like:

A 10 GAIN FOR TARGET my battlefield has card named $(C)

and if you want to attack E2 instead of E1, you can add a rule like:

Any Card 10 GAIN FOR TARGET enemy battlefield has card named $(E2)


The gain value can be roughly calculated as target's attack+health

Sorry we're lack of tutorials, I'll add more samples in the near future.