Burning Question

Type: Instant
Subtype: NONE
Card text:
"As an additional cost to cast this spell, discard a card.

CARDNAME deals 3 damage to any target. Draw a card."

Expected rarity: Uncommon (U)
Rarity Reasoning:
- Lightning Strike + Thrill of possibility.
- Too strong for a common, to weak/uninpressive for a rare.

Innovation: Combining a burn spell with a rummaging spell.
Choice of effects:
- Switching the 2nd card drawn by a 3 damage spell for 1 extra mana 
- Having it not be an Artifact provides protection.
- Giving it a mana filtering ability helps deal with the fact that the player might not have a Land of the color he needs to copy.

Tentative cost: {2}{R}
Cost Reasoning:
- Switching the 2nd card drawn for 3 damage seems to put the card cost between 3 and 2, but I think 3 is a more catious approach.

Possible alterations:
- If countering is seen os too much a blow out, or answers against ward are seen as needed, the card could be uncounterable.
- If the card is too strong or needs the addition of a small effect that would make it stronger, changing the cost to {1}{R}{R} should be reasonable.
- The discard could be optional and not a mandatory cost.
- Damage could be adjusted to 2.
- Card draw could be switched by a clue.

Temporary Flavor Text: "The answer is usually fire."
Temporary Name: "Burning Question"