In a showdown where the attacker kills some but not all defending units (one defender was stunned and couldn't deal damage back), does the attacker conquer the battlefield or do they recall?

Question

Accepted Answer

Ruling: The attacker recalls back to base. As long as any defending units remain at the battlefield after damage cleanup, the attacker does not conquer and must recall.

Sequence:
- Showdown occurs with Player B attacking Player A's battlefield
- Player B stuns one of Player A's units with Rune Prison
- Damage is dealt and resolved
- Player B kills 2 of Player A's 3 units
- Player A's remaining unit (the stunned one) survives
- Since a defender is still present, Player B's attacker recalls back to base
- Player A's remaining unit stays at the battlefield