Avalanche Riders [Urza's Legacy] Legendary Artifact "It has been my honor

"It has been my honor to improve on the Thran's original design

Set: Beta Edition Type: Artifact Rarity: Uncommon Cost: {1} Whenever a player casts a white spell

Niv-Mizzet

if Hidden Stag is a creature

(You may sacrifice a creature in addition to any other costs as you cast this spell

Avalanche Riders [Urza's Legacy] Legendary Artifact "It has been my honorSet: Urza's Legacy Type: Creature Human Nomad Rarity: Uncommon Cost: {3}{R} Haste Echo {3}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When Avalanche Riders enters the battlefield, destroy target land.