Mana acceleration

Mana acceleration is Magic: The Gathering jargon for the concept of accelerating one's mana base, thereby enabling one to gain as much mana as quickly as possible, often in order to play a Finisher. By using mana acceleration, players tend to exchange their card advantage to gain tempo.

Mana accelerators are cards that produce more mana during a turn than the mana used to cast them, thus allowing for mana acceleration.

Without mana acceleration combo decks suffer immensely.

Most mana acceleration cards are green, but red and black have received numerous mana accel cards as well. Artifacts are useful for mana acceleration as well (Black Lotus, Sol Ring, the Moxen, etc.).