Conduit of Emrakul Creature Eldrazi Werewolf 5/4 Whenever Conduit of Emrakul attacks, add CC to your mana pool at the beginning of your next main phase this turn

Aggravate Anger of the Gods Artistic Process Ashen Firebeast Ashling the Pilgrim Ashling, Flame Dancer Avengers Disassembled Balefire Dragon Barrage of Boulders Battle-Scarred Goblin Blasphemous Act Blazing Volley Bloodfire Colossus Bloodfire Dwarf Bloodfire Infusion Bloodfire Kavu Boiling Earth Bomb Squad Bonfire of the Damned Breath of Darigaaz Brotherhood's End Burn Down the House Burning of Xinye Calamitous Cave-In Calamity of Cinders Caldera Hellion Call Forth the Tempest Callous Sell-Sword Cataclysmic Prospecting Cave-In Cerebral Eruption Chain Reaction Chandra Nalaar Chandra's Flame Wave Chandra's Fury Chandra, Bold Pyromancer Chandra, Flame's Fury Chandra, Flamecaller Chandra, Pyrogenius Chaos Balor Cinderclasm City on Fire Collective Inferno Conductive Current Cosmotronic Wave Crowd's Favor Crush the Weak Dagger Caster Delayed Blast Fireball Desert Sandstorm Destructive Force Devastate Devastating Dreams Disaster Radius Earthquake Earthshaker End the Festivities Explosive Singularity Falling Star Fang Dragon Fast // Furious Fault Line Feint Fiery Confluence Fire Juggler Fire Magic Fire Tempest Flame Sweep Flame Wave Flamebreak

If your commander cares about tapping, you probably care about Patriar's Seal which is way more flexible as a colorless card
Removal, in short, is any way to get rid of your opponent's cards (especially their threats)
We learned that substantially more than half of all opened boosters are not used in Limited play (aka Sealed and Draft)
I also like that these are represented with charge counters, which mean that you get all sorts of opportunities to manipulate them further