How it works
Prerequisites
- You have enough mana to cast Blur.
Steps
- 1Cast Blur by paying its mana cost, blinking Felidar Guardian.
- 2Felidar Guardian and Preston trigger.
- 3Resolve the Felidar Guardian trigger, blinking another permanent you control.
- 4Resolve the Preston trigger, creating a token copy of Felidar Guardian that is a 0/1 Illusion.
- 5When the Felidar Guardian token enters the battlefield, it triggers, blinking the nontoken Felidar Guardian.
- 6Repeat from step 2.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?