Jace's Archivist [Commander 2013] XY75 you can Special Summon 1

you can Special Summon 1 Dragon-Type monster from your hand

Set: Sun & Moon: Celestial Storm Type: Dragon Rarity: Ultra Rare Retreat cost: Colorless

-Remove 1 monster on the field from play

by Tributing 1 Thunder Effect non-Fusion Monster (in which case you do not use "Polymerization")

Set: Gym Challenge Unlimited Type: Grass Rarity: Uncommon Retreat cost: Colorless

Jace's Archivist [Commander 2013] XY75 you can Special Summon 1Set: Commander 2013 Type: Creature Vedalken Wizard Rarity: Rare Cost: {1}{U}{U} {U}, {T}: Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way. "This is a sacred duty. Master Beleren's trust has bought an eternity of my loyalty."