All 18 Combos with Rith, the Awakener

Rith, the Awakener + Aggravated Assault + Utopia Mycon

Infinite Mana: Infinite colored mana, Infinite combat damage, Infinite combat phases, Infinite creature tokens, Infinite death triggers, Infinite ETB, Infinite LTB, Infinite sacrifice triggers, Infinite untap of creatures you control, Infinite mana creatures you control can produce

Deal combat damage using Rith. Rith triggers, causing you to pay {2}{G} to create at least eight 1/1 Saproling creature tokens. Move to your postcombat main phase. Activate Utopia Mycon's second ability five times by sacrificing five Saprolings, adding {3}{R}{R}. Activate Aggravated Assault by paying {3}{R}{R}, untapping all creatures you control and causing you to get an additional combat and main phase after this one. Move to your next combat phase, and deal combat damage using Rith. Rith triggers, holding priority, activate Utopia Mycon's second ability three times by sacrificing three Saprolings, adding {2}{G}. Resolve the Rith ability, causing you to pay {2}{G} to create at least eight 1/1 Saproling creature tokens. Repeat from step 3. If there are at least nine permanents of any particular color on the battlefield, this combo will net infinite creature tokens and colored mana.