Key Cards Pluto, Friendly Pooch This deck has three copies of Pluto, Friendly Pooch, which you should aim to get on the board on turn one as often as possible
If you no longer have coven at that point (because, say, somebody pointed the pointy end of Swords to Plowshares at one of the creatures in your coven), then nothing happens when the trigger resolves
There are a number of effects in black that can give you life for killing creatures, which lets you keep everyone else in check while you do your thing
A permanent with an ability that triggers whenever you "expend N" will see mana you spent to cast spells the turn it enters, including mana you spent before it entered
Modular decks are a concept that many brewers have flirted with over the past couple of years
Conclusion Today we have seen that Gates are more than just a bunch of tap lands