Fleecemane Lion is a rare Creature — Cat card from Theros (THS), collector number 193. Current market price: $0.38 (foil $2.05), TCGplayer market prices via Scryfall.
{3}{G}{W}: Monstrosity 1. (If this creature isn't monstrous, put a +1/+1 counter on it and it becomes monstrous.) As long as this creature is monstrous, it has hexproof and indestructible.