Mizzium Meddler

2015-06-22 If Mizzium Meddler leaves the battlefield before its ability resolves, the targets remain unchanged.
2015-06-22 If Mizzium Meddler's triggered ability targets a spell or ability with no targets, nothing happens.
2015-06-22 If a spell or ability has a variable number of targets, you can't change the number of targets.
2015-06-22 If changing one target of a spell or ability to Mizzium Meddler would make other targets of that spell or ability illegal, the targets remain unchanged.
2015-06-22 If the spell or ability has multiple instances of the word "target," you choose which target you're changing to Mizzium Meddler as Mizium Meddler's ability resolves.
2015-06-22 Mizzium Meddler's triggered ability can target a spell or ability even if Mizzium Meddler wouldn't be a legal target for that spell or ability. However, the target of that spell or ability will remain unchanged.
2015-06-22 The target of the spell or ability won't change unless Mizzium Meddler fulfills all the targeting criteria. If a spell or ability has multiple targets, such as Send to Sleep, you can change only one of the targets to Mizzium Meddler.

mtg.wtf