WotC did not lay out a schedule for these patches in their announcement, but did indicate they would be active between set releases, and that they intend to rebalance cards on a more frequent basis to keep the format fun, fast and dynamic. Re-balanced versions of Standard cards will be differentiated with the MTG Arena stamp next to their name
Likewise, it could be that they have a spell/trap set in their spell/trap zone, so you can place a spell/trap in that same column on your side of the field, and now theres 2 cards in that column, letting you special summon a Mekk-Knight to it On top of being able to get out strong monsters this way multiple times per turn, they have multiple effects, some of which let you move the cards on the field so that you can summon to the same zone (because the columns had 2 or more cards in them) multiple times by letting you move the card you just summoned out of the way and put a new one there
You can pay two mana as you cast the Suppressor, as many times as you like, creating a token copy for each time you've payed the cost
The text always remains on a card even if another card revises its abilities
