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Tyrant’s Familiar

Flying, haste
Lieutenant — As long as you control your commander, Tyrant’s Familiar gets +2/+2 and has “Whenever Tyrant’s Familiar attacks, it deals 7 damage to target creature defending player controls.”

Rarity : Rare
Types : Creature
SubTypes : Dragon
Artist : Todd Lockwood
Flavor : Nothing escapes its gaze—or its breath.
Cost converted to mana : 7

Rulings

7 November 2014
Lieutenant abilities apply only if your commander is on the battlefield and under your control.
7 November 2014
Lieutenant abilities refer only to whether you control your commander, not any other player’s commander.
7 November 2014
If you gain control of a creature with a lieutenant ability owned by another player, that ability will check to see if you control your commander and will apply if you do. It won’t check whether its owner controls their commander.
7 November 2014
If you lose control of your commander, lieutenant abilities of creatures you control will immediately stop applying. If this causes a creature’s toughness to become less than or equal to the amount of damage marked on it, the creature will be destroyed.
7 November 2014
If a triggered ability granted by a lieutenant ability triggers, and in response to that trigger you lose control of your commander (causing the lieutenant to lose that ability), that triggered ability will still resolve.

Temple of the False God

{T}: Add {C}{C}. Activate this ability only if you control five or more lands.

Spine of Ish Sah

When Spine of Ish Sah enters the battlefield, destroy target permanent. When Spine of Ish Sah is put into a graveyard from the battlefield, return Spine of Ish Sah to its owner's hand.