Okay. I might splash in lightning bolts, and add Think Twice . Thanks DuTogira, Lightning Bolt is on maybeboard, should I add it for Nimbus Maze , basic lands, and Serum Visions ?

If you are adding Lightning Bolt I'm thinking it will end up being used for removal more often than not. In that case, I would probably move Mana Leak to your sideboard, main board the Lightning Bolt s, and remove Cancel from your sideboard. You shouldn't ever need more than 4 copies of 3 mana hard counters in any matchup anyway, so I don't think it will hurt the deck much, if at all.

Okay. I will do a bit of playtesting to see if the deck is better with or without Lightning Bolt . Let's see about it...

And for the Mountain s I'd add 2 as well as 3 Steam Vents and switch out all copies of Seachrome Coast and Nimbus Maze .

Mana Leak should NOT be sideboard. and I would check out Keranos, God of Storms

Okay, I don't know, consider both suggestions for some time. Keranos and steam vents are maybe.

If Mana Leak is a card you want to keep in the main board, I might also consider swapping out the 4xAzor's Elocutors and 1xWrath of God for 2xKeranos, God of Storms and 3xLightning Bolt . The reason for this is that the Elocutors aren't really a win condition until you have you opponent permanently locked down (at which point you have won anyway) and the Wrath of God s also become dead cards once you have achieved the combo. Therefore I think swapping those cards out to splash red presents a reasonable alternative to removing Mana Leak . Just a third option to consider.

True, as I could play a Erayo and swing instead. Thanks much.

Hey, I always hate to be THAT guy, but Gigadrowse and 3 times payed its replicate cost doesn't flip Erayo, Soratami Ascendant . It is simple - copies of spells are not counted as spells. Here is the rule for it:

706.9. To copy a spell or activated ability means to put a copy of it onto the stack; a copy of a spell isn't cast and a copy of an activated ability isn't activated. A copy of a spell or ability copies both the characteristics of the spell or ability and all decisions made for it, including modes, targets, the value of X, and additional or alternative costs. (See rule 601, "Casting Spells.") Choices that are normally made on resolution are not copied. If an effect of the copy refers to objects used to pay its costs, it uses the objects used to pay the costs of the original spell or ability. A copy of a spell is owned by the player under whose control it was put on the stack. A copy of a spell or ability is controlled by the player under whose control it was put on the stack. A copy of a spell is itself a spell, even though it has no spell card associated with it. A copy of an ability is itself an ability.

Again, sorry for saying this.

That's actually not that big of a problem. This deck is pretty control heavy... All that has to be done is have Erayo out on the field. Once that's done, counter opponent spells so they can't play them. Your opponent can't fight a counter war as long as Erayo is on board because if you counter their counter, Erayo flips and you can permalock them by playing Eidelon.

That being said, maybe switch out Gigadrowse for Spell Pierce in preparation for that counter war, or at least to threaten it.

Replace Gigadrowse with either Increasing Confusion or Deep Analysis . Combo should go:
Play Erayo.
Double trigger your cheap flashback spell.
Trigger a 1 mana spell like Lightning Bolt or Serum Visions .
Bit harder to do but... Do-able with around 7 mana if you use Increasing Confusion as the flashback card