Incubation Druid + Touch of Vitae Combos

Combo 1 with Quicksilver Elemental

Steps

1. Cast Touch of Vitae by paying {2}{G}, targeting Incubation Druid.
2. Activate Quicksilver Elemental by paying {U}, causing it to gain Incubation Druid's activated abilities until end of turn.
3. Activate Quicksilver Elemental using Incubation Druid's ability by tapping it, adding {U}{U}{U}
4. Activate Quicksilver Elemental using Incubation Druid's ability granted to it by Touch of Vitae by paying {0}, untapping Quicksilver Elemental.
5. Repeat from step 2.