Dovescape + Displacer Kitten + Phyrexian Altar + Spellbook Seeker // Careful Study

Prerequisites

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Steps

1. 1Cast a copy of the prepared spell by paying its mana cost.
2. 2When you cast that spell, Displacer Kitten and Dovescape trigger.
3. 3Resolve the Dovescape trigger, countering the prepared spell and creating a number of 1/1 flying Bird creature tokens equal to its mana value.
4. 4Resolve the Displacer Kitten trigger, blinking Spellbook Seeker // Careful Study, which enters prepared.
5. 5Activate Phyrexian Altar by sacrificing a Bird token, adding one mana of any color.
6. 6Repeat.

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite creature tokens
• Infinite death triggers
• Infinite magecraft triggers
• Infinite storm count