Valhalla

{t} Add {r}{r}{r} and {u}{u}{u} to your mana
pool
{u/r}{u/r}{u/r}{t} As an additional cost for this ability
sacrifice a creature. Creatures you control get
+10/+1 First Strike, Trample, and Vigilance
until end of turn
"All hope for the day when they can feast and
fight among the lords of Valhalla"