Master's Guidance is a rare Enchantment card from Avatar: The Last Airbender Eternal (TLE), collector number 206. Current market price: $0.67 (foil $0.72), TCGplayer market prices via Scryfall.
Whenever you attack with two or more legendary creatures, put a +1/+1 counter on each of up to two target attacking creatures. At the beginning of your end step, if you control a creature with power 4 or greater, draw a card.