Max speed : Target creature gains haste until end of turn
According to the rules of Magic , if a creature has both a 1/1 and a +1/+1 counter, they cancel each other out, so the end result of this loop will be that we have a normal Putrid Goblin, which we can sacrifice again to Altar of Dementia to mill two more cards and start the process over again
You may put a creature card from among them onto the battlefield
The user interface while dueling can seem a little convoluted at first, but handles the play mechanics of the card game well - players familiar with the Magic: The Gathering card game will feel right at home once they get used to this UI
Tezzeret, Cruel Captain and Daretti, Scrap Savant are wonderful planeswalkers to include with all of these card-drawing artifacts, if possible
Additionally, it can proliferate +1/+1 counters and poison counters when it dies, making it a valuable addition to these types of decks