Summoning Tactics, Demon Fusion, Tactical Mastery

Whenever you cast a creature spell, you may pay {U}{R}. If you do, scry 2.

{2}, {T}: Sacrifice a creature you control. Search your library for a creature card with converted mana cost equal to the sacrificed creature's converted mana cost plus 2. Put that card onto the battlefield and shuffle your library.

Whenever a creature you control deals combat damage to a player, draw a card.