I'm still working on making the UI better and adding more features, but I might put it out there for people to use eventually when I think it's finished or at least worth other people's attention
Even the strongest cards in Yu-Gi-Oh
Boreal Druid / Avacyn's Pilgrim / Elves of Deep Shadow 8 Not tapping for green does reduce the value of these one drop ramp options but they are still usually a fine fill in for being light on ramp or on one drops
To bargain a spell, you can sacrifice an artifact, enchantment, or a token when casting it
However, Kenrith, the Returned King is one of the most versatile commanders, and there are plenty of builds meant to interact with the whole table in fun ways
However, my opponent could tap it in response to my spell precisely to activate its ability