Small combo I found myself
I'm a member of essentialmagic.com now and I like to make decks based around particular themes. I often don't own the cards of the decks irl, but I like to do it anyway. I find small combos here and there that I quite like, and I'll put one of them here now. Most of my decks are only legal in Casual/Fun because a single block or set doesn't have the amount of cards necessary for me to make a satisfactory theme deck.
From my Hall of Mirrors deck:
Spirit Mirror - (2)WW - At the beginning of your upkeep, if there are no Reflection tokens in play, put a 2/2 white Reflection creature token into play.
0: Destroy target Reflection.
Artificial Evolution - U - Change the text of target spell or permanent by replacing all instances of one creature type with another. (This effect doesn't end at end of turn.)
If you Artificial Evolution's ability to change "Reflection" in Spirit Mirror's text to any creature type, you now have the ability to destroy anything of the chosen creature type for free, at any time. And since it doesn't say "Destroy Target Reflection creature" but instead only "Destroy Target Reflection," you can also destroy artifacts (by selecting "Artifacts") or any tribal spell (by selecting "Elf" or "Merfolk" or "Faerie," etc.)
Also from my Mirror Deck:
Panoptic Mirror + Mirror Sheen + Divine Congregation + (optional) Boon Reflection
Panoptic Mirror - (5) - Imprint - X, T You may remove an instant or sorcery card with converted mana cost X in your hand from the game. (That card is imprinted on this artifact.)
At the beginning of your upkeep, you may copy an imprinted instant or sorcery card. If you do, you may play the copy without paying its mana cost.
Mirror Sheen - 1(u/r)(u/r) - 1(u/r)(u/r): Copy target instant or sorcery spell that targets you. You may choose new targets for the copy.
Divine Congregation - (3)W - You gain 2 life for each creature target player controls.
Put down Mirror Sheen early, just to get it out of the way. As soon as possible, put down Panoptic Mirror and on the next turn (if you can't afford it just then), imprint Divine Congregation to it. At the beginning of your next turn, use Panoptic Mirror's ability to play Divine Congregation without paying its mana cost. Choose yourself, and copy it with Mirror Sheen as many times as you like so long as you have the mana. If you have a fair few creatures, your life total will rocket. Add a Boon Reflection to the midst for more fun! Repeat every turn if desired.
From my Hall of Mirrors deck:
Spirit Mirror - (2)WW - At the beginning of your upkeep, if there are no Reflection tokens in play, put a 2/2 white Reflection creature token into play.
0: Destroy target Reflection.
Artificial Evolution - U - Change the text of target spell or permanent by replacing all instances of one creature type with another. (This effect doesn't end at end of turn.)
If you Artificial Evolution's ability to change "Reflection" in Spirit Mirror's text to any creature type, you now have the ability to destroy anything of the chosen creature type for free, at any time. And since it doesn't say "Destroy Target Reflection creature" but instead only "Destroy Target Reflection," you can also destroy artifacts (by selecting "Artifacts") or any tribal spell (by selecting "Elf" or "Merfolk" or "Faerie," etc.)
Also from my Mirror Deck:
Panoptic Mirror + Mirror Sheen + Divine Congregation + (optional) Boon Reflection
Panoptic Mirror - (5) - Imprint - X, T You may remove an instant or sorcery card with converted mana cost X in your hand from the game. (That card is imprinted on this artifact.)
At the beginning of your upkeep, you may copy an imprinted instant or sorcery card. If you do, you may play the copy without paying its mana cost.
Mirror Sheen - 1(u/r)(u/r) - 1(u/r)(u/r): Copy target instant or sorcery spell that targets you. You may choose new targets for the copy.
Divine Congregation - (3)W - You gain 2 life for each creature target player controls.
Put down Mirror Sheen early, just to get it out of the way. As soon as possible, put down Panoptic Mirror and on the next turn (if you can't afford it just then), imprint Divine Congregation to it. At the beginning of your next turn, use Panoptic Mirror's ability to play Divine Congregation without paying its mana cost. Choose yourself, and copy it with Mirror Sheen as many times as you like so long as you have the mana. If you have a fair few creatures, your life total will rocket. Add a Boon Reflection to the midst for more fun! Repeat every turn if desired.