If Oculus Whelp dies at the same time as your transformed permanents, its ability will trigger, and you'll draw a card
Here is how the combo works: activate Duskmantle's ability, and tap Ghoulcaller's bell so each player mills 1 card
3 Points: Balance, Copy Artifact, Earthquake, Icy Manipulator, Jade Statue, Jayemdae Tome, Mox Jet, Mox Ruby, Mox Sapphire, Regrowth, Steal Artifact, Timetwister, Wheel of Fortune
Specter's Shriek B Sorcery Target opponent reveals their hand
The same is true of Modern Elements deck that plays Fury, Solitude, and the like
That's what made Thirst special: unlike Frozen Solid and Dehydration, it tapped the creature RIGHT NOW, taking it out of combat for as long as you're willing to pay a blue mana