Thanks to having in-built Double Strike, you can potentially get two cards for your trouble, but thats about it
Mephidross Vampire plays super well with Triskelion, though many casual playgroups frown on combos like this for being too easy to assemble
In a knight-themed deck, youll want your type-based lords on the field as soon as possible, or youll want to combine them with multiple spells in the same turn to surprise an opponent with a lot more power on the attack than they expected
Frolicking Familiar R for one damage is okay, and its place in your cube mostly depends on how useful that effect is since it can range from being worth an actual card if killing an X/1 vs being something to finish something off (being worth a partial card.) Heartflame Duelist A somewhat-Bonecrusher that misses out on the curve-out game plan
Hydroblast + Blue Elemental Blast Pauper staple Hydroblast and Blue Elemental Blast are truly unique effects as counterspells that also destroys permanents
Creatures are everything this color wants to be doing