River Delta doesn't untap during your untap step if it has a depletion counter on it.
At the beginning of your upkeep, remove a depletion counter from River Delta.
{T}: Add {U} or {B}. Put a depletion counter on River Delta.
Near Mint - $1.60
Near Mint Non-English - $1.60
Lightly Played - $1.50
Lightly Played Non-English - $1.50
Played - $1.20
Played Non-English - $1.20
Heavily Played - $1.00
Heavily Played Non-English - $1.00
Damaged - $0.80
Damaged Non-English - $0.80