You dont get a mana discount for plotting with Fblthp and the sorcery-speed restriction on plotting clashes with many of blues best cards
Orcish Bowmasters The most likely card to find a deck in Modern, Orcish Bowmasters can do a lot
Guttersnipe If youre not going wide with things like Young Pyromancer tokens or generating some combo, Guttersnipe is a brutally efficient wincon of choice
Toymaker, and Fortisphere from play in Core Constructed, the main format used in Disney Lorcana Challenge
Nissa, Resurgent Animist Double or something This three-mana Green 3/3 sees Nissa no longer being all Phyrexianed up, and also going back to her roots - which is a big old pun that were not going to apologise for because thats just how this whole thing goes
In the skies, meanwhile, it looks like there'll be cards for the Witch-king, Fellbeast wyverns, and a swarm of giant bats