Berserker's Frenzy [Dungeons & Dragons: Adventures in the Forgotten Realms Commander]

Set: Dungeons & Dragons: Adventures in the Forgotten Realms Commander Type: Instant — Rarity: Rare Cost: {2}{R} Cast this spell only before combat or during combat before blockers are declared.Roll two d20 and ignore the lower roll.1-14 | Choose any number of creatures. They block this turn if able.15-20 | You choose which creatures block this turn and how those creatures block.