JJ "Kewl Tune"

Per-phrase breakdown

• You can Normal Summon 1 Tuner during your Main Phase each turn, in addition to your Normal Summon/Set (you can only gain this effect once per turn). (Continuous-like)
• Each "Kewl Tune Loudness War" you control gains 3300 ATK while your opponent has a Tuner in their field or GY. (Continuous-like)
• You can Tribute 1 Tuner; add to your hand or Special Summon, 1 "Kewl Tune" monster from your Deck, also you cannot Special Summon for the rest of this turn, except Tuners. (Ignition-like)
• You can only use this effect of "JJ "Kewl Tune"" once per turn. (Condition)

Judge-facing facts

• Field Spell Card
• The effect to Normal Summon 1 Tuner in addition to your Normal Summon/Set does not start a Chain
• The additional Normal Summon effect only allows Normal Summoning in face-up Attack Position (including Tribute Summons); it does not allow Setting
• The ATK gain effect is continuous and does not start a Chain
• The effect to Tribute 1 Tuner to add or Special Summon is an activated effect that starts a Chain
• You can Tribute a face-down Defense Position Tuner to activate the effect to add or Special Summon

Card-specific notes from database

• (Konami neuron) You must declare to your opponent when you are performing the additional Normal Summon granted by this card
• (Konami neuron) You can use this additional Normal Summon before or after your regular Normal Summon/Set
• (Konami neuron) If multiple effects granting an additional Normal Summon/Set are applying, you can only apply one of them per turn
• (Konami neuron) You can activate the effect to Tribute a Tuner even if you already Special Summoned non-Tuners earlier in the turn
• (Konami neuron) The restriction to Special Summon only Tuners applies for the rest of the turn as long as the activation or resolution is not negated, even if no monster is successfully added or Special Summoned
• (YGOResources) While restricted to Special Summoning only Tuners, you cannot attempt to Special Summon a non-Tuner monster that would be treated as a Tuner upon Summon (such as Synchro Summoning a non-Tuner using Martial Metal Marcher, or Special Summoning Infernoble Knight - Renaud via its own effect)
• (YGOResources) If the restriction to Special Summon only Tuners is applied in Chain to an effect that would Special Summon a non-Tuner as a Tuner, that monster is not Special Summoned