Repel the Darkness
Instant
Tap up to two target creatures.
Draw a card.
A boon to those who cannot see in the dark. A bane to those who live in it.
Scott Chou
Ultimate Masters (UMA)
• #29Rulings
If you target one creature and that target is illegal as Repel the Darkness resolves, the spell doesn't resolve. You don't draw a card.
(wotc • 2018-12-07)
If you target two creatures and they're both illegal as Repel the Darkness resolves, the spell doesn't resolve; you don't draw a card. If just one target is illegal, the spell does resolve; the remaining legal target becomes tapped (if it's untapped at that time) and you draw a card.
(wotc • 2018-12-07)
You may target zero, one, or two creatures. The creatures don't need to be untapped.
(wotc • 2018-12-07)
If you target zero creatures, all that happens is you draw a card.
(wotc • 2018-12-07)
Rulings
If you target one creature and that target is illegal as Repel the Darkness resolves, the spell doesn't resolve. You don't draw a card.
(wotc • 2018-12-07)
If you target two creatures and they're both illegal as Repel the Darkness resolves, the spell doesn't resolve; you don't draw a card. If just one target is illegal, the spell does resolve; the remaining legal target becomes tapped (if it's untapped at that time) and you draw a card.
(wotc • 2018-12-07)
You may target zero, one, or two creatures. The creatures don't need to be untapped.
(wotc • 2018-12-07)
If you target zero creatures, all that happens is you draw a card.
(wotc • 2018-12-07)