Ivaryus, Bond Master

{1}: Until end of turn, Ivaryus gains your choice
of flying, lifelink, menace, trample, or vigilance.
As long as Ivaryus has flying and another
creature you control has flying, creatures you
control with flying have first strike . The same is
true for lifelink and deathtouch, menace and
haste, trample and +1/+1, and vigilance and
reach