I find myself adding it to almost any deck that cares about turning sideways
As that ability resolves, if the creature has a +1/+1 counter on it for any reason, you simply won't put any +1/+1 counters on it
Players Go Nuts for $150+ MTG Anime Draft Booster Cards
The two nonland permanents don't have to have entered at the same time
Atraxas proliferate supercharges every permanent with counters artifacts, creatures, and planeswalkers all benefit
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