Desperate Sentry is a common Creature — Human Soldier card from The List (PLST), collector number EMN-21. Current market price: $0.03, TCGplayer market prices via Scryfall.
When this creature dies, create a 3/2 colorless Eldrazi Horror creature token. Delirium — This creature gets +3/+0 as long as there are four or more card types among cards in your graveyard.