Does Yawgmoth's Will allow you to play lands from your graveyard as part of your normal land play for the turn?

Yawgmoth's Will states that until end of turn, you may play cards from your graveyard. Playing a land is specifically defined in the rules as a special action (CR 116.2a), not casting a spell, and it is governed by your normal land-play limit for the turn (CR 305.2).

Because Yawgmoth's Will grants permission to 'play' cards from the graveyard — and 'playing a land' is a subset of playing a card — it does allow you to play a land from your graveyard. However, this uses your one land play for the turn just like playing a land from your hand would (CR 305.2).

If you have already played a land this turn before Yawgmoth's Will resolves, you cannot play another land from your graveyard (unless another effect has increased your land-play limit, such as Exploration). Conversely, if you haven't yet played a land this turn, you may play one land from your graveyard under Yawgmoth's Will's permission.

Concrete example: It's your main phase and you haven't played a land yet. You cast Yawgmoth's Will. You have a Swamp in your graveyard. You may play that Swamp as your land for the turn. Afterward, you cannot play another land from your hand or graveyard unless you have extra land plays available.

Note that Yawgmoth's Will also exiles cards that would leave the graveyard, so the land goes to exile rather than to the battlefield directly from the graveyard — wait, it does enter the battlefield normally; the exile replacement only applies if the card would go somewhere other than exile after being played (CR 400.7 context). The land enters the battlefield normally; what Yawgmoth's Will exiles is cards that would leave the graveyard by other means, but actually the card is played from the graveyard and moves to the battlefield as normal — the exile clause on Yawgmoth's Will replaces cards leaving the graveyard for any other reason.