Sonic Shrieker

A Mardu three-color enters-the-battlefield trigger asks a lot of a body to earn its keep, and this one loads the entry effect with three advantages at once: a Lightning Helix on the way in, plus a discard rider when that two damage lands on a player. The discard clause is the wrinkle worth sitting with, because it only fires if a player takes the damage. Point the two at a creature and you get a smaller Lightning Helix; point it at the opponent and you strip a card from their hand, converting a modest attrition trade into genuine advantage. That conditional means the same trigger plays offense or defense depending on the board, which is unusual for a stapled ETB. The four-power flier is the closer that makes the package cohere: this is not a value creature that trades down, it is a threat that also happens to swing three axes of the game (life total, board, hand) as it lands. The Wedge color identity carries real weight here, since the drain, the removal, and the disruption are each a color's classical contribution folded into one cast, the kind of synthesis a three-color slot exists to justify.