Guardian Scalelord is a rare Creature — Dragon card from Secrets of Strixhaven Commander (SOC), collector number 149. Current market price: $0.31, TCGplayer market prices via Scryfall.
Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following abilities until end of turn.) Flying Whenever this creature attacks, return target nonland permanent card with mana value X or less from your graveyard to the battlefield, where X is this creature's power.