Dragon's Herald
Shards of Alara — uncommon
Creature — Goblin Shaman
Dragon's Herald rulings:
2008-10-01: To activate the ability, you must sacrifice three different creatures. You can’t sacrifice just one three-colored creature, for example.
2008-10-01: You may sacrifice multicolored creatures as part of the cost of the search ability. If you sacrifice a multicolored creature this way, specify which part of the cost that creature is satisfying.
2008-10-01: You may sacrifice the Herald itself to help pay for the cost of its ability.