Yeenoghu, Prince of Gnolls

Increased Savagery — Whenever Yeenoghu,
Prince of Gnolls enters the battlefield, goad all creatures.
Bestial Rage — All other Gnolls and Hyenas you control get +1/+0 and double strike.
{4}{b}{r}: Create a colorless Artifact token named
Iron Spike attached to target creature. The token
has "Iron Spike cannot be sacrificed. At the
beginning of your turn, you lose 3 life. Pay 6 life: Destroy Iron Spike."