Walking Ballista [Double Masters] XY02 you might as well trade

you might as well trade it for something else

Set: Ikoria: Lair of Behemoths Type: Creature — Human Wizard Rarity: Rare Cost: {1}{W} Your opponents can't cast spells from anywhere other than their hands

you may attach it to target creature you control

Activate only during your upkeep

Set: War of the Spark Promos Type: Legendary Planeswalker — Kiora Rarity: Uncommon Cost: {2}{G/U} Whenever a creature with power 4 or greater enters the battlefield under your control

Walking Ballista [Double Masters] XY02 you might as well tradeSet: Double Masters 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.