Improvements and additional cards

General improvements to multi-and artifact. Shore up some weaker areas in each color.
Library of Leng > Skysovereign, Consul FlagshipCult Guildmage > Mayhem DevilPsychatog > Gleaming OverseerCromat > Niv-Mizzet RebornShapers of Nature > Tatyova, Benthic DruidThrummingbirdParhelion IIGoblin AssaultCurse of PredationCorpse Augur

Promote aggro - blue

Not much aggro to be added sadly. But a bit of monarch, card draw, and noncreature support.
Rise from the Tides > Bond of InsightCanal CourierChampion of Wits

aggro red 2

Pyroclasm > Sweltering Suns

Promote aggo - red

Mainly the addition of two new cards.
Generator Servant > Viashino PyromancerScouring Sands > Barrage of BouldersHellfire Mongrel > Scab-Clan BerserkerKrenko, Tin Street KingpinGrenzo's Ruffians

Promote aggro - black

Black also good for aggro. Improve some cards. Remove Twlight's Call which slows the game too much. Add board wipe and another sac outlet + recursion, and another benefit for decking opponents.
Whisper, Blood LiturgistMassacre GirlPlague Spitter > Plague MareBad Moon > GuiltfeederDisfigure > Ultimate PriceDismember > Ob Nixilis's CrueltyTwilight's Call > Ashes to Ashes

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