2021-06-18 If you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs
For example, if you animate Infinite Guideline Station with Bello, Bard of the Brambles while it has fewer than 12 charge counters, it wont gain flying, and it wont gain its attack trigger
On the flipside, Hakka is a two-mana 2/3 flyer that scrys 2 when it connects
Kassandra tutors The Spear of Leonidas to the field, and you should see some card draw off of it
Weve definitely seen Standard formats dominated by some unlikely cards in the past Cauldron Familiar and Arboreal Grazer are doing it right now, in fact
Itd be sweet if Shaun & Rebecca were the right colors to go with, but alas, they are Bant-aligned and therefore a little difficult to slot into other assassin decks