Its pretty easy to slot Cavern of Souls into your mana base, thankfully, but there are more options from Vexing Shusher to Destiny Spinner
Each pack contains 12 Magic cards, including 1 Mystical Archive card (Uncommon, Rare, or Mythic Rare), 1 Lesson card (Common, Uncommon, Rare, or Mythic Rare), 1 Rare or Mythic Rare, 1 foil of any rarity, 1 Wild Card of any rarity, 6 assorted Commons or Uncommons that are thematically connected (with Commons connected to other Commons and Uncommons connected to other Uncommons), and 1 Land cardplus 1 Art Card and 1 Ad/Token or special card from Magic's history (a card from "The List")
Because Blech naturally wants you to flood the battlefield with small creatures, go-wide payoffs become very appealing
This doesnt have to be combat damage, either, so high-damage burn spells like Scorching Shot can enable it too
Mimic Vat isnt exactly a clone effect in the traditional sense, but come on, its a literal clone vat
That is, until you take into account the cards first ability - The Power of Evil, which allows the player to play Chernabog, Evildoer for one less ink per character card they have in their discard