Your search for "Riftbound Vendetta - Pre-Rift Event Kit" revealed the following:
Ziggs - Hexplosives Expert (Overnumbered) - 169/167 - Showcase from Riftbound: Radiance, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Kindlejack Card Text:1 and 1 Rune, Exhaust: Play a Bomb gear token to a battlefield.
Boneshiver - 118a/221 - Promo from Riftbound: Organized Play Promos, available at 401 Games Canada. Rarity: Promo Finish: Foil Artist: KAMI Card Text:[EQUIP 1 Body]When I conquer, channel 1 rune exhausted. Might +2.
Ziggs - Hexplosives Expert (Signature) - 169*/167 - Showcase from Riftbound: Radiance, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Kindlejack Card Text:1 and 1 Rune, Exhaust: Play a Bomb gear token to a battlefield.
Lillia - Bashful Bloom (Signature) - 230*/219 - Showcase from Riftbound: Unleashed, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Oussama Agazzoum Card Text:4, Exhaust: Play a ready 3 Might Sprite unit token with [TEMPORARY]. This ability costs...
Aphelios - Exalted (Signature) - 224*/221 - Showcase from Riftbound: Spiritforged, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Masaki Hsu Card Text:When you attach an Equipment to me, choose one that hasn't been chosen this turn —•Ready...
Piercing Light - 023/221 - Rare from Riftbound: Spiritforged, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Kudos Productions Card Text:[REPEAT 2, Fury] (You may pay the additional cost to repeat this spell's effect.)Deal 2 to a unit...
Rengar - Pridestalker (Signature) - 227*/219 - Showcase from Riftbound: Unleashed, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Duy Nguyen Card Text:When you play a unit, give a unit +1 Might this turn.
Irelia - Fervent (Signature) - 225*/221 - Showcase from Riftbound: Spiritforged, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Bo Chen Card Text:DEFLECT (Opponents must pay Rune to choose me with a spell or ability)When you choose or...
Calm Rune (UNL) - R02c - Promo from Riftbound: Organized Play Promos, available at 401 Games Canada. Rarity: Promo Finish: Normal Artist: Greg Ghielmetti & Leah Chen
K'Sante - Courageous (Heartsteel Signature) - 178*/167 - Showcase from Riftbound: Radiance, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Luscinia Studio Card Text:[ACCELERATE][SHIELD 2]When I hold, channel 1 rune.