The whole flavor seems to imply that yes, All these cards are powerful, but the power level displays raw power over refined skill
You get tons of control over what you sacrifice, from the tokens produced by Jadar, Ghoulcaller of Nephalia to cards like Heaped Harvest and Ichor Wellspring that encourage you to remove them
While Fall of Cair Andros does have a built-in way to deal noncombat damage, Blasphemous Act will clear most of the board, power up your Orc Army enough for it to survive, and leave your opponents with no blockers to stop the rampaging hordes of Mordor
Demonic Tutor in the command zone is scary, even if it's 5 mana and demands a sacrifice
So, you might have opened some cards that have high prices, you just don't know it yet
Main Collectable Card Games Magic: The Gathering Wizard (Token) Wizard (Token) Card Type: Token Creature - Wizard Card Text: Whenever you cast a noncreature spell, this token deals 1 damage to each opponent