MTG >Combos >Retreat to Coralhelm +Paradise Mantle +Scaretiller +Guildless Commons +

Equip Scaretiller with Paradise Mantle and tap it to add a mana of any color. Scaretiller's ability will trigger, put Guildless Commons from your hand into play. Retreat to Coralhelm's ability will trigger, untap Scaretiller Guildless Commons's ability will trigger, return itself to your hand. Repeat the process for infinite mana.