Spyglass Siren

If a resolving spell or ability instructs a specific creature to explore but that creature has left the battlefield, the creature still explores. If you reveal a nonland card this way, you won't put a +1/+1 counter on anything, but you may put the revealed card into your graveyard. Effects that trigger "whenever a creature explores" trigger as appropriate.

Some spells or abilities might cause a creature to explore multiple times in a row. If you reveal a nonland card when a creature explores and leave it on top of your library, then the creature explores again immediately afterwards, you'll reveal the same card again.

Map tokens are a kind of predefined token. Each one is a colorless artifact with the artifact subtype Map and the ability " 1 generic mana , tap , Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery."