Tetravus [Antiquities] BW73 Whenever you cast a spell

Whenever you cast a spell with an even mana value

Basic Landcycling 1 (1

Set: EX: Legend Maker Type: Colorless Rarity: Holo Rare Retreat cost: Colorless

Set: Amonkhet Invocations Type: Legendary Creature — God Rarity: Mythic Cost: {4}{U}{R} Flying

{B}: Regenerate Wall of Bone

Tetravus [Antiquities] BW73 Whenever you cast a spellSet: 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