Walking Ballista [Aether Revolt] Juggernaut {T}: Gain control of target

{T}: Gain control of target creature with power less than or equal to the number of Islands you control for as long as Vedalken Shackles remains tapped

there you will find aid and comfort

Creatures can't attack you

Entry 855: There's more to Avacyn's madness

Sacrifice X creatures: Target player draws X cards and gains X life

Walking Ballista [Aether Revolt] Juggernaut {T}: Gain control of targetSet: Aether Revolt 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.