To pump Heart of Kiran with Battle-Rattle Shamans ability you need a Heart of Kiran to be a creature when Shamans trigger is put on stack
Generally, the simpler the design, the better
Collection Compliance Grays staff will not load a truck, trailer or vehicle that is assessed by them as inappropriate, this includes, but is not limited to, Oversize Overweight Over height Items that are fixed to a pallet, must remain this way when loading
Both the idea and execution behind Breed Lethality impress me
It is also fairly poor to use on EtB effect cards which is a hidden limit on its effective target range
Reasonable Energy costs (single-type attacks, low color requirements)