I just picked up the spell Sickening Radiance and had a chance to try it out last session. The wording has caused some confusion and a disagreement between myself and my DM. The spell states:
When a creature moves into the spell's area for the first time on a turn or starts its turn there, that creature must succeed on a Constitution saving throw or take 4d10 radiant damage [...]
We were fighting multiple vampires. I cast Sickening Radiance on the enemy group. DM immediately rules that due to the language of the spell, they are not affected by it, since they "haven't started their turn in it" and they "didn't move into it". Okay, fair enough. They'll start their turn there, so I'm not concerned.
They start their turn within it and are dealt the damage. They then, logically, move out of the spell, but stand five feet out of it. Their turn ends, and my turn begins. I cast Eldritch Blast twice along with the Invocation Repelling Blast to push two of them 10 feet, which shoves them into the spell's effect area. The DM moves onto the next person; I gently remind him that they need to make Constitution saves for Sickening Radiance.
He refuses, stating that the language of Sickening Radiance uses "moves", not "pushed", and therefore is only triggered by the target using their movement, not just any movement into it. I obviously disagree, and argue that it just says "moves into", which they did, as a result of my Eldritch Blast.
Obviously DM fiat and all that, so if he says it doesn't work, it doesn't work. But I'm still curious about a rules based answer to this, as it seems like a very strict (and likely incorrect) reading.