Ral, Monsoon Mage // Ral, Leyline Prodigy Commander deck

Instant and sorcery spells you cast cost {1} less to cast. Whenever you cast an instant or sorcery spell during your turn, flip a coin. If you lose the flip, Ral deals 1 damage to you. If you win the flip, you may exile Ral. If you do, return him to the battlefield transformed under his owner's control. // Ral enters with an additional loyalty counter on him for each instant and sorcery spell you've cast this turn. +1: Until your next turn, instant and sorcery spells you cast cost {1} less to cast. −2: Ral deals 2 damage divided as you choose among one or two targets. Draw a card if you control a blue permanent other than Ral. −8: Exile the top eight cards of your library. You may cast instant and sorcery spells from among them this turn without paying their mana costs.

Based on 6 real Ral decks and 12 similar commanders.