Source: MTGStocks The price bump is no surprise considering the Harbinger didnt get a reprint in the precon, though its not the only elemental to miss a reprint in the deck
Theyre usually instants cast in response to another spell on the stack, where they can target it to send it to the graveyard rather than allow it to resolve
Barret Wallace is one of the most beloved characters in Final Fantasy VII, which makes this card all the more disappointing

The Final Days Gaius van Baelsar Hecteyes Jecht, Reluctant Guardian Kain, Traitorous Dragoon Malboro Namazu Trader Ninjas Blades Overkill Phantom Train Poison the Waters Qutrub Forayer Reno and Rude Resentful Revelation Sephiroth, Fabled SOLDIER Sephiroths Intervention Shambling Cieth Shinra Reinforcements Sidequest: Hunt the Mark Summon: Anima Summon: Primal Odin Tonberry Undercity Dire Rat Vaynes Treachery Vincent Valentine // Galian Beast Vincents Limit Break Zenos yae Galvus Zodiark, Umbral God Barret Wallace Blazing Bomb Call the Mountain Chocobo Choco-Comet Clive, Ifrits Dominant Coral Sword The Fire Crystal Fire Magic Firion, Wild Rose Warrior Freya Crescent Gilgamesh, Master-at-Arms Haste Magic Hill Gigas Item Shopkeep Laughing Mad Light Of Judgement Mysidian Elder Nibelheim Aflame Opera Love Song Prompto Argentum Queen Brahne Random Encounter Raubahn, Bull of Ala Mhigo Red Mages Rapier Sabotender Samurais Katana Sandworm Seifer Almasy Self Destruct Sidequest: Play Blitzball Sorceresss Scheme Summon: Brynhildr Summon: Esper Ramuh Summon: G.F

For two mana, Dockside Extortionist gives you one Treasure token for every artifact or enchantment that your opponents control