The decks shell see the most play in are no doubt going to be Aristocrats builds that sacrifice a lot of creatures
You might as well get value from your ability before the removal spell hits, though you have to account for summoning sickness
Krenko, Tin Street Kingpin is amazing when combined with equipment and buffs, but its efficient enough even if it dies early
Any card with the artifact type triggers historic cards
Given that Yamatos decision to identify as male was based on his desire to emulate the legendary Samurai Kozuki Oden, its fitting that this card can also be treated as a Character card with the name Kozuki Oden (or, as spelled on the card and in certain translations, Kouzuki Oden)
Wallbreaker solves this by putting an extra combat on an equipment and even giving you a 2/2 rebel when it enters to ensure you get at least one good opportunity to use it before paying the hefty four mana equip cost