Lightning Storm by paying ({1} magic symbol) ({R} magic symbol) ({R} magic symbol) , targeting either copy of
Stormchaser Drake.
Stormchaser Drake triggers, which due to
Abundance causes you to reveal cards from the top of your library until you reveal a land card and put it into your hand.
Activate
Lightning Storm by discarding a land card, putting that land card on the bottom of your library due to
Wheel of Sun and Moon.
Resolve the
Lightning Storm ability, putting two charge counters on it and changing the target to the other copy of
Stormchaser Drake.
Repeat from step 2.
Once
Lightning Storm has an arbitrarily large number of charge counters, activate it by discarding a land to change its target to any other target of your choosing to deal infinite damage to that target.
Notes
Other players may also activate
Lightning Storm to change its target, making this combo risky if you do not have additional land cards in hand to activate