The path to power is often paved with atrocities.

The Elderspell

Destroy any number of target planeswalkers. Choose a planeswalker you control. Put two loyalty counters on it for each planeswalker destroyed this way.

War of the Spark Promos

War of the Spark

You can cast The Elderspell without controlling any planeswalkers. The target planeswalkers will still be destroyed. You can also cast it without targeting any planeswalkers if you really want to do so.

You choose the target planeswalkers to destroy as you cast The Elderspell, but you don’t choose a planeswalker to receive loyalty counters until The Elderspell is resolving.