Terrasymbiosis is a rare Enchantment card from Edge of Eternities Promos (PEOE), collector number 210p. Current market price: $9.43 (foil $9.60), TCGplayer market prices via Scryfall.
Whenever you put one or more +1/+1 counters on a creature you control, you may draw that many cards. Do this only once each turn.