Mishra's Command (BRO) from The Brothers' War, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Dominik Mayer
• Card Text:
  Choose two —
  • Choose target player. They may discard up to X cards. Then they draw a card for each card discarded this way.
  • This spell deals X damage to target creature.
  • This spell deals X damage to target planeswalker.
  • Target creature gets +X/+0 and gains haste until end of turn.