Yep, your two mana card may be too slow
You could say that the way to maximize Siphoner is to play with energy producers, which is true, but the other way to maximize Siphoner is to play with lots of cheap removal
6th) Genesect-V (Alternative Full Art) (Fusion Strike - 255/264) Still within the "Fusion Strike" deckbuilding format, Genesect is practically the "engine" for incessant draws and resource searches, seeking to gain sequential advantages
Yasharn, Implacable Earth Modern Magic has no shortage of artifact tokens that sacrifice themselves
#9 -- Shining Noctowl Shining Noctowl is one of those cards that catches people off guard
17 Nikara, Lair Scavenger, And Yannik, Scavenging Sentinel Nikara, Lair Scavenger, and Yannik, Scavenging Sentinel are Mono-Black and Selesnya creatures respectively that have the partner ability, allowing them to be played together as an Abzan commander