There are a few decks that actual turn this rule into an exploitable advantage, using it as a free discard outlet to pitch giant creature cards to Reanimate next turn or a Dredge card such as Golgari Grave-Troll for subsequent self-milling, but in what I would call fair decks, this maximum hand size rule is not nice, especially when you are mana-screwed
The Geralfs Messenger variant from Finally
Deaths Shadow first started seeing play a few years ago in a very different type of deck in Modern, called Suicide Zoo
In any event, I'm focusing in on the last block of text on Cyclonus, the Saboteur: Whenever Cyclonus deals combat damage to a player, it Connives
At this point I stopped looking
Colossal Dreadmaw survives as a meme despite Wizards making a couple of cards that are clear nods to it, but if Wizards makes two more elk cards, we think they'll officially be flogging a dead horse (I realize I'm risking confusion here, introducing a second four-legged animal to the paragraph)