Since Magic the Gathering started way back in 1996 there have been a lot of expansions to the game.

1. Arabian Nights
2. Antiquities
3. Legends
4. The Dark
5. Fallen Empires
6. Ice Age
7. Chronicles
8. Homelands
9. Alliances
10. Mirage
11. Visions
12. Weatherlight
13. Tempest
14. Stronghold
15. Exodus
16. Unglued
17. Urza's Saga
18. Urza's Legacy
19. Urza's Destiny
20. Mercadian Masques
21. Nemesis
22. Prophecy
23. Invasion
24. Planeshift
25. Apocalypse
26. Odyssey
27. Torment
28. Judgment
29. Onslaught
30. Legions
31. Scourge
32. Mirrodin
33. Darksteel
34. Fifth Dawn
35. Unhinged
36. Champions of Kamigawa
37. Betrayers of Kamigawa
38. Saviors of Kamigawa
39. Ravnica
40. Guildpact
41. Dissension
42. Coldsnap
43. Time Spiral
44. Planar Chaos
45. Future Sight
46. Lorwyn - 2007-10-12
47. Morningtide - 2008-02-01
48. Shadowmoor - 2008-05-02
49. Eventide - 2008-07-25
50. Shards of Alara - 2008-10-03
51. Conflux 2009-02-06
52. Alara Reborn - 2009-04-30
53. Zendikar - 2009-10-02
54. Worldwake - 2009-02-05
55. Rise of the Eldrazi - 2009-04-23
56. Scars of Mirrodin - 2010-10-01