Dynamo Grenade

When Dynamo Grenade ETBs, tap up to two
target creatures or artifacts.
Those tapped permanents remain tapped until
Dynamo Grenade leaves the battlefield.
Dynamo Grenade ETBs with 4 stun counters.
When Dynamo Grenade leaves the battlefield,
you may search your library a basic land card.
Place it onto the battlefield tapped, then shuffle.