Xrathiks, Wyrmking

Shadow, Singe (deals 1 damage to target creature.The creature becomes black until end of turn.)
Wyrmkings favor (for each dragon creature you control Xrathiks costs {1} less, for each {1} reduced, dragons you control receive + 1 /+ 1)
{4},{t}, Destroy all dragons, to summon an equal number of +2/+2 black shadow dragon tokens with Shadow, flying and singe.
{10}, Shadowburn, (Shadow dragons attack twice and
lose their shadow for the turn. wyrmkings favor buff is tripled.)