Guilds of Ravnica

Experimental Frenzy | Enchantment | | You may look at the top card of your library any time. You may play lands and cast spells from the top of your library. You can't play lands or cast spells from your hand. {3}{R}: Destroy Experimental Frenzy. | Simon Dominic

Maniacal Rage | Enchantment | Aura | Enchant creature Enchanted creature gets +2/+2 and can't block. | Heonhwa Choe

Street Riot | Enchantment | | As long as it's your turn, creatures you control get +1/+0 and have trample. | Tomasz Jedruszek

Firemind's Research | Enchantment | | Whenever you cast an instant or sorcery spell, put a charge counter on Firemind's Research. {1}{U}, Remove two charge counters from Firemind's Research: Draw a card. {1}{R}, Remove five charge counters from Firemind's Research: It deals 5 damage to any target. | Grzegorz Rutkowski

Thousand-Year Storm | Enchantment | | Whenever you cast an instant or sorcery spell, copy it for each other instant and sorcery spell you've cast before it this turn. You may choose new targets for the copies. | Dimitar Marinski