Caldaia Guardian is a rare Creature — Human Soldier card from New Capenna Commander (NCC), collector number 156. Current market price: $0.27, TCGplayer market prices via Scryfall.
Whenever this creature or another creature you control with mana value 4 or greater dies, create two 1/1 green and white Citizen creature tokens. Blitz {2}{G} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)