So Fire Wing, which normally does 30 damage for one Energy, can do 80 instead
Artifacts have been around forever, and they have good creature beatdown, lethal combos, and strong value effects
Card Text: You may pay rather than pay this spell's mana cost
Charge of the Mites Goliath Hatchery Infested Fleshcutter Kinzu of the Bleak Coven Lukka, Bound to Ruin Mirrex Ria Ivor, Bane of Bladehold Skrelv's Hive Viral Spawning White Sun's Twilight Wurmquake There are three different tokens with toxic 1 that can be created by various cards: the 1/1 Phyrexian Mite token, the 3/3 Phyrexian Beast token, and the */* Phyrexian Wurm token with toxic 1
Spell Queller features heavily in 60-card Spirits decks, and it made a name for itself in both Modern and Standard upon release