Can you respond to your own land drop since playing a land doesn't use the stack?

Playing a land is a special action defined in CR 116.1a and CR 305.1. Special actions do not use the stack — they take effect immediately when you declare them. Because the land never goes on the stack, there is no point at which either player could respond to it before it enters the battlefield.

Under CR 116.2a, after a special action is taken, players do receive priority again, but at that point the land is already on the battlefield. So while you can cast a spell or activate an ability after the land has entered, you cannot do anything between the moment you announce the land play and the moment it enters — there is simply no such window.

This is different from playing a spell: when you cast a spell it goes on the stack (CR 601.2), and both players receive priority before it resolves, creating a response window. Lands bypass that entire process entirely.

Concrete example: You have a Wasteland in hand and your opponent plays a Tropical Island as their land drop. You cannot destroy Tropical Island with Wasteland's activated ability before it enters the battlefield — by the time you receive priority, Tropical Island is already in play and you would be activating Wasteland in response to nothing (though you can still activate it immediately after if you wish).

Key rules: CR 116.1a (special actions defined), CR 116.2a (priority after special action), CR 305.1 (playing a land as special action), CR 601.2 (casting spells uses the stack).