I'm mostly writing this for myself, but here's my manabase breakdown if anyone is interested.
No Toil//Trouble
I'm working with the assumption that we want at least; 19 red, 10 white, and 3 Mutavault. This is real easy to achieve without any black splash.
[deck]RW Burn manabase[/deck]
Where the unknown is either the; 4th Mutavault, 3rd Guildgate, 10th Mountain, 1st red Temple, or 1st white Temple. You can cut Mountains down to 6* for an equivalent amount of red temples, if you are a complete baller.
Toil//Trouble in Main or Side
The black splash comes at the expense of Mountains/Boros Guildgate. Temple of Silence is now the prefered 23rd land in the above scenario. (*) The limiting criteria are mountains for Chained to the Rocks, and the amount of comes
into play tapped lands. Based on Karsten's article (I'm assuming everyone has it bookmarked by now), we want 10 "mountains" to cast CttR by T5 most of the time. This is where Blood Crypt is better than Temple of Malice.
[deck]RWb Burn manabase[/deck]
Where 4 of the 8 unknowns are any combination of Mountains and Blood Crypts, and the other 4 any combination of Mountains, Temple of Malices, Boros Guildgates, or the 4th Mutavault. Going for Mutavault means you have 18 red, which is passable I suppose? There's wiggle room for the Mutavault if Temple of Silence turns into a Boros Guildgate I guess.
I guess the split you choose depends on;
- How much you value Toil vs. not dying to your lands
How much you value Mutavault vs. casting your spells
How much you value Scry vs. your hate of CIPT
How greedy you are generally
Have I
made any grievous errors? I think the 4th Mutavault is quite greedy if you want black, but could see playing some number of Blood Crypt.