Topiary Stomper

Vigilance
When Topiary Stomper enters the battlefield,
search your library for a basic land card, put it
onto the battlefield tapped, then shuffle.
Topiary Stomper can't attack or block unless
you control seven or more lands.
Called into service when the Queen invoked
an oath they swore, the trolls are treated as true
knights of Caria, and fight arm in arm with
their human comrades.