The Echo Knight’s echo, does it count as a creature for the purpose of optional flanking rules and as a target to spells and attacks?

Magic Resistance: does it only affect Intelligence, Wisdom and Charisma saving throws, or does it affect a saving throw for any ability score?

Eldritch Blast: are the attacks resolved in parallel or sequence?

99% of my D&D 5e rules questions stem from carrying 35 years worth of D&D rules in my head

Can the new metamagic option Seeking Spell be used on the Green Flame Blade cantrip’s attack roll after a miss?

Do you have any qualms on the utility of summoned wolves?

What is the intention between Booming/Green-Flame blades requiring a weapon with a value of at least 1sp, when no weapon has a value below 1sp?