Mairsil, the Pretender + Morphling + Gilded Lotus + Quicksilver Elemental

Mairsil, the Pretender

Morphling

Gilded Lotus

Quicksilver Elemental

How it works

1. Activate Mairsil using Gilded Lotus' ability by tapping it, adding .
2. Activate Mairsil using Morphling's first ability by paying , untapping Mairsil.
3. Activate Mairsil using Quicksilver Elemental's ability by paying , causing Mairsil to gain all activated abilities of itself until end of turn.
4. Repeat.