Tetravus [Antiquities] Eldrazi you may add an amount

you may add an amount of {C} equal to the number of creatures you control that share a creature type with it

Set: Planeshift Type: Creature — Human Wizard Rarity: Rare Cost: {W}{U} As Meddling Mage enters the battlefield

Set: Unhinged Type: Instant Rarity: Rare Cost: {B} Choose an artist

Whenever a creature an opponent controls with a -1/-1 counter on it dies

Tetravus [Antiquities] Eldrazi you may add an amountSet: Antiquities Type: Artifact Creature Construct Rarity: Rare Cost: {6} Flying Tetravus enters the battlefield with three +1 +1 counters on it. At the beginning of your upkeep, you may remove any number of +1 +1 counters from Tetravus. If you do, create that many 1 1 colorless Tetravite artifact creature tokens. They each have flying and "This creature can't be enchanted." At the beginning of your upkeep, you may exile any number of tokens created