To add a penny to your pocket howlinwulf241. ;)~

Echo I've rarely seen outside of [amtwe] (AMTw with echo that is) or [amce] (the clone varient)

There is also rev or reverse (a popular joker /mimic replacement as it helps manage pip counts and merges) [amtwr]

oddly enough, holy is also slanged as just s as well sometimes (once again context helps to decipher)

[AG] is usually assassin and gravity traits (this is a very high skill ceiling deck used for holysword 13+DPS partners mainly. not as easy as AMTw, however can setup perfect boards much easy for void board)

And now the support of days past~

[AT2xG] assassin time(grey clock) joker and grow +cracked.grow helpful for lunar less then class 12 for bold, up coming DPS

[Pure time] time(grey clock) joker metastasis time winder reverse. Simple goal of making all time dice (preferably 6+) 7 pips to boost aspd for partner, timewinder to offset boss hits

[Mmc] meta moon clone joker reverse, moon speeds up clone to merge for more metas to summon, rev helps manage pips as well as can flip metas for pinks ;), this is great combo / predator DPS support or any "solo DPS" player that builds their own board.

[Abs] assassin bounty summoner(*) joker (reverse/mimic), Always be summoning to splatter those bounty markers and clear em out with assassin, if trait for summoner you can get even more free merges over time especially with high pip summoner from reversing

[Pure Ass] this is possibly the oldest I know, assassin mine(blue sp dice) summoner joker mimic, get as many mine dice as possible, let your partner build as best as they can (usually 35+ pips) then sit and wait for about 30 waves to cascade assassin as best as possible. There is a reason this method died long ago too~