Thats just a lot of value
Fastbond First Printed: 1993-AUG Banned: 2009-JUN Fastbond exploits two unique and important aspects of the format: 1) Higher life totals make the damage essentially trivial if this is played in the early game
This includes a variety of exciting Saga cards, like There and Back Again, which chronicles Bilbo Baggins' journey into the unknown in The Hobbit
Another example is Mine Is the Only Truth, which makes you draw a card whenever a player casts a spell
For the purposes of completing a set, such as for the set collection screen or for certain achievements, you'll similarly only need a single copy of a card from a specific set as you have a playset of cards with that same name
The Eldrazi deck features a bunch of devoid spells of varying color costs, and of course for Commander, their casting cost denotes their color identity and thus their legality