Solid Footing is a common Enchantment — Aura card from Ikoria: Lair of Behemoths (IKO), collector number 31. Current market price: $0.20 (foil $0.31), TCGplayer market prices via Scryfall.
Flash Enchant creature Enchanted creature gets +1/+1. As long as enchanted creature has vigilance, it assigns combat damage equal to its toughness rather than its power.