Theres dozens of legendary creatures that could lead a deck like that, so knowing where to start can be difficult thats why were looking at the best elf commanders in MTG
Lets create a hypothetical scenario to help illustrate the point of synergy and what is meant by it
Every time a new MTG set is released, Wizards of the Coast produces a range of different products containing the new cards, in different configurations, for various types of players
If you need to set off the chain of instant explosions, cast Go for the Throat on one opponents token creature, pull a card like Liliana's Triumph to get rid of those pesky indestructibles on the other side of the table, pull some more mana from one of the rituals, and take out a heavy with Tragic Slip, spending 7 mana or so to wipe out the board state for many whenever you feel like triggering the sequence
They can be a way to gamble some disposable income