Lazav, the Multifarious + Patron of the Orochi in GY + 8 forest type lands or green mana dorks = infinite green creature untaps. Infinite mana if you have 9 forest type lands or green mana dorks.
Each copy activation of Lazav's ability allows a new instance of 'once each turn' abilities.
Each copy activation of Lazav's ability allows a new instance of 'once each turn' abilities.
League Guildmage + Lava Spike + spliced Psychic Puppetry + spliced Desperate Ritual = infinite red, infinite damage to opponent
Other decent 1cmc arcane that can replace Lava Spike: Reach Through Mists or Spiritual Visit
The Cryptolith Rite combos also have copies 5-8 in Song of Freyalise that can be added to the list.