Merrow Commerce [Lorwyn] Elf Berserker Doesn't work

Doesn't work

Set: Magic 2014 Promos Type: Sorcery Rarity: Common Cost: {2}{W} Create two 1/1 colorless Sliver creature tokens

Sacrifice a creature and a snow Swamp: Destroy target creature

Set: Magic 2012 Type: Sorcery Rarity: Rare Cost: {4}{B}{B}{B} Sorin's Vengeance deals 10 damage to target player or planeswalker and you gain 10 life

Merrow Commerce [Lorwyn] Elf Berserker Doesn't workSet: Lorwyn Type: Tribal Enchantment Merfolk Rarity: Uncommon Cost: {1}{U} At the beginning of your end step, untap all Merfolk you control. Schools meet and mingle on Lorwyn's riverways. In the bustling interplay, the merrow renew their sense of community as they sharpen their wits and hone their trading skills.