The most aggressive MTG color combination is now a control deck - built around drawing extra cards each turn and fending off attacks with tiny blockers and removal until the time comes to win the game with a massive Phyrexian or an army of tokens all buffed up by the level 3 ability of Caretaker's Talent
Search Elemental's first ability won't be put onto the stack until after the spell or ability that caused you to search your library finishes resolving
Other players know how strong precons are, so they can choose an appropriate deck to play with
Drana, the Last Bloodchief The vampire Drana has played several different roles on Zendikar
Verix Bladewing Verix Bladewing is a Limited bomb that happened to receive legendary status
Another option for her is as a combo commander, allowing you to draw your deck with Kykar, Wind's FuryKykar, Wind's Fury and Sensei's Divining TopSensei's Divining Top, and winning with Laboratory ManiacLaboratory Maniac or Jace, Wielder of MysteriesJace, Wielder of Mysteries