Both are legendary in more than name, with The Masamune giving first strike when attacking and forcing a foe to block, while also giving double triggers for creatures dying
You have one card that can be exactly what you need, so it ignores the singleton nature of the format
Eldrazi Conscription I like that aura players sometimes bring in Eldrazi Conscription, especially those that look to attack with one stacked creature or that want to copy the enchantments effect across a whole board, like Three Dog, Galaxy DJ
However, in this case, it also benefits them directly, unlike one-time choice cards like ScroungeScrounge or Fact or FictionFact or Fiction
Its an incredible three-for-one that calls back to one of the most iconic blue spells ever printed