Walking Ballista [Jumpstart 2022] SM221 When you attack with three

When you attack with three or more creatures

from your Deck to the Graveyard

Extra equipmentAs if that wasn’t enough

or if this card in your possession is destroyed by an opponent's card effect and sent to your Graveyard: You can Special Summon 1 "Gaia The Fierce Knight" monster from your hand

then discards three cards

Walking Ballista [Jumpstart 2022] SM221 When you attack with threeSet: Jumpstart 2022 Type: Artifact Creature Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1 +1 counters on it. {4}: Put a +1 +1 counter on Walking Ballista. Remove a +1 +1 counter from Walking Ballista: It deals 1 damage to any target.