Just like all of the cards in this cycle, Enduring Tenacity, when it dies, returns to the battlefield as an enchantment, making sure that your opponent will have to kill it twice or exile it to get rid of its passive effects
That comes out to 2.5 mana per card, without accounting for the mana you spent on the sacrificed creature, which is pretty decent in the grand scheme of things
Kiki-Jiki, Mirror Breaker and Zealous Conscripts
The effect is that the subjects dont feel like inert action figures posed against evacuated backgrounds
Each person who makes a mistake is eliminated from the game until there is one left standing
That's about $8 cheaper than the market average right now, according to TCGPlayer, so it's worth buying from a third-party listing through a reputable retailer if you're looking to score some packs