Seedcradle Witch + Bloom Tender + Planewide Celebration

Prerequisites

• Bloom Tender does not have summoning sickness.

Steps

1. 1Cast Planewide Celebration by paying , creating at least one 2/2 Citizen creature token that's all colors.
2. 2Activate Bloom Tender by tapping it, adding .
3. 3Activate Seedcradle Witch by paying , giving Bloom Tender +3/+3 until end of turn and untapping it.
4. 4Repeat from step 2.

Effects

• Infinite black mana
• Infinite blue mana
• Infinite mana of colors among permanents you control
• Infinite red mana
• Infinitely large creature until end of turn