I don't know if you should be playing Kashtira in Mekk-Knights as they and Girsu are mutually exclusive. Being stuck with a Kashtira on board also prevents you from placing a Mekk Knight in its column to negate. Also, evenly matched might not be the best boardbreaker because it leaves you with only half a column.
Girsu's token effect is more important going first any way, which is not advised to begin with. The pressure Fenrir puts up immediately is really nice going second.
@@gravethestampede3454 Girsu's token effect is a 1 card link-2, can stack a column for Mekk-Knight Blue Sky to go +2 and is part of the only 1-card-combo the archetype has.