Only playing odd-costed cards is a less pressing constraint than even-costed cards because you get access to some really efficient spells
By paying one colorless mana, you can sacrifice the card to give another creature you control indestructible and put all of Zacks counters, along with an Equipment, on that other creature
This is a card that has mostly been relegated to Magic: The Gathering bulk boxes since The Brothers War, but here it finds a place to shine
Each qty is for 1 booster pack
During your Main Phase, except the turn this card was sent to the GY: You can banish this card from your GY, then target 1 face-up Spell/Trap on the field
When a Spell Card is activated that targets exactly 1 monster on the field: Negate the activation, and if you do, destroy it