Winding Constrictor is a rare Creature — Snake card from Secret Lair Drop (SLD), collector number 309. Current market price: $8.99, TCGplayer market prices via Scryfall.
If one or more counters would be put on an artifact or creature you control, that many plus one of each of those kinds of counters are put on that permanent instead. If you would get one or more counters, you get that many plus one of each of those kinds of counters instead.