Endless Sands
Land — Desert
: Add 
.
, : Exile target creature you control.
, , Sacrifice this land: Return each creature card exiled with this land to the battlefield under its owner's control.
Noah Bradley
Commander 2020 (C20)
• #272Rulings
The last ability of Endless Sands returns only creature cards exiled by that card. If Endless Sands leaves the battlefield before you activate that ability, the exiled creatures are lost in the dunes forever.
(wotc • 2017-07-14)
If you exile a creature that isn’t a creature card with the second ability of Endless Sands (such as a token creature or a land that has become a creature), the third ability won’t return that token or card from exile.
(wotc • 2017-07-14)
Desert is a land subtype with no special meaning. It doesn’t grant the land an intrinsic mana ability. Other cards may care about which lands are Deserts.
(wotc • 2017-04-18)
Rulings
The last ability of Endless Sands returns only creature cards exiled by that card. If Endless Sands leaves the battlefield before you activate that ability, the exiled creatures are lost in the dunes forever.
(wotc • 2017-07-14)
If you exile a creature that isn’t a creature card with the second ability of Endless Sands (such as a token creature or a land that has become a creature), the third ability won’t return that token or card from exile.
(wotc • 2017-07-14)
Desert is a land subtype with no special meaning. It doesn’t grant the land an intrinsic mana ability. Other cards may care about which lands are Deserts.
(wotc • 2017-04-18)