Intruder Alarm

This card is insane for my elf deck, I use this combo for superiority over everything: Llanowar Elves+Imperious Perfect+Intruder Alarm+Wellwisher+Spidersilk Armor= Infinite Health and Infinite Elf Soldier Tokens that can block anything.

This is the best card in The Universe with Godsire You get infinite 8/8 tokens. If you get this and godsire out... You win, instantly.

Big combo card must have three card infinite mill ,infinite 1/1 creature combo is just one of infinte combos this card can do. Heres how " Drowner of Secrets" and "Stonybrook Schoolmaster" w/ "Intuder Alarm" of course. Try it!And buy it! Others like "Kiki Jiki Mirror Breaker" and "razorfin hunter" infinite 1 damage to ctr or player! Awsome card

Godsire or Presence of Ghond + Intruder Alarm + Luminescent Rain = INFINATE LIFE!

creature (especially a mana accellerant) + Presence of Gond + This= enough said.

this card and godsire infinite 8/8 beast tokens

What those guys said but in combination with a sliver queen, a gemhide sliver and a legion, unlimited slivers, mana, and a lot of boosting from the legion.

Voice of the Woods + 4 more elves (pretty easy to get) + Intruder Alarm = Infinite 7/7 Trample Elemental Tokens, as early as turn 3. There are so many combo's possible with this card, it's meant to be abused.

This is a great card, it has a very subtle control ablitiy. It also happens to be very easy on the mana cure aspect because while it may be a three cast, only one of the three needs to be an Island. People will only either disenchant this card to late or counter it after they have seen what you have instore for it. My favorite combo is:
Intruder Alarm with Recycle with Aluren, and a whole bunch of 'Tims' (Prodigal Sorcerer) type cards

Great combos guys,but wrath of god the 8/8 creatures (summon sickness) and disenchant intruder alarm. If you can mill thier deck down even before the combo sets up it takes away alot of thier defensive and offensive options. My merfolk deck can also kill creatures (unnatural selection +spirit mirror along with harpoon sniper,and silvergill + merfolk thaumaturgist)and gain 15 to 35 life(judge of currents and merrow commerce) each turn and mill the same(drowner of secrets) before the combo sets up( Intruder Alarm, drowner,and schoolmaster). So keep in mind a 3 or 4 turn combo isnt always going to draw out that way in some games its over before your combo ever makes it. So make the deck win with out the combos and its sweeter when the combos do work 2nd or 3rd turn.This merfolk deck is one big combo each creature and enchantment working with any other card in deck so no matter what the card draw is I still have a viable deck.

What he said, but add Twiddles and Tradewind Riders for a hairpulling experience for your opponent :)

All that + poluce sliver and one that gives them vigilence.