In black, using Bargain should be easy to make Candy Grapple an all-star removal card that can hit nearly any creature in the deck aside from massive finishers in green like Hamlet Glutton
Those Spiders also have Menace, so they can be quite intimidating attackers sometimes too
You can say confidently that Titan of Eternal Fire and Chained to the Rocks are referencing the myth of Prometheus, but without those cultural reference points its hard for outsiders to understand the ideas which inspire specific cards
Since Heroic decks are built around stacking up the power on creatures, this makes Greatsword of Tyr a fantastic addition to the archetype.
Even when you do decide to draw cards, you get some selection alongside it
The board wipe needs to resolve before the creatures come back to the battlefield, so the creatures have to come back later that turn or else they simply flicker then die