Gimli, Lord of Aglarond

Mountainwalk, mentor
Partner with Legolas, Heir of Mirkwood
(When this card enters the battlefield, target player
may put Legolas, Heir of Mirkwood into their hand
from their library, then shuffle.)
Creatures you control that share a creature type
with Gimli, Lord of Aglarond have riot.
Certainty of death? Small chance of success? What are
we waiting for?