Rebel decks often just dropped down Lin Sivvi and then never cast another spell the entire game, instead building up their forces and mana base turn after turn
Theres premium removal spells in most colors, quality common fixing in green, and many broken bomb rares
Of course, you can't mention Heliod, Sun-Crowned without mentioning the famous combo of it and Walking Ballista
This makes a top 10 list somewhat redundant, so instead, well only be singling out a few Prototype powerhouses
Spend this mana only to cast creature spells
New sets of cards are releasing almost every month, and with them the pool of threats in the Commander format is growing and growing