Does Muldrotha the Gravetide let you play a land from the graveyard in addition to your normal land play for the turn?

Muldrotha, the Gravetide's ability states you may play lands and cast spells from your graveyard, but it does not grant you extra land plays. Playing a land from your graveyard via Muldrotha still uses your normal land play for the turn, governed by CR 305.2, which states a player may play one land per turn unless an effect explicitly says otherwise.

Muldrotha's text says 'you may play lands' from your graveyard — this modifies where you can play a land from (graveyard instead of hand), not how many lands you can play. The ability removes the restriction that lands must come from your hand, but does not increase the count of your land plays.

If you want additional land plays on top of Muldrotha's effect, you need a separate card that explicitly grants extra land plays, such as Exploration or Azusa, Lost but Seeking. Those effects stack with each other and with Muldrotha.

Concrete example: You control Muldrotha and have a Forest in your graveyard and a Plains in your hand. On your turn, you play the Forest from your graveyard using Muldrotha's ability — that is your one land play. You cannot also play the Plains from your hand this turn (barring another effect granting extra land plays).