How do I resolve this effect if I sacrifice a card that has multiple types (e.g. Automaton) ?
When
you sacrifice a
card that has multiple types, you may specify which type your opponent must match. For example, if you sacrifice one
automaton (
Minion and
Artifact), you can force your opponent to sacrifice a minion or an artifact, your choice (not both). Similarly, if you're playing as
Enchantress and you sacrifice an animated
aura (Minion and Aura), you can force your opponent to sacrifice a minion or an aura, your choice (not both).