So a machine like Telekinetic Bonds will trigger if you cycle Ash Barrens, just tap some mana and tap/untap that permanent
Flooding the board with crazy tokens like 4/4 Angels or 7/7 Dinosaurs would be possible thanks to Ojer Taq's effect
When one card with such a low cost enables so many strategies, it usually isnt healthy for Modern
Then, you draw a card for each counter on it when it enters the battlefield, all but guaranteeing you get to refill your hand or even draw extra cards if you can load it up with enough counters
If the monarch leaves the game during another player's turn, that player becomes the monarch
Mockingbird, a popular card in various Green and Blue Ouroboroid decks, will also rotate, as well as a couple of key Lands for Control and Landfall decks like Fabled Passage and Fountainport