Though I usually don't recommend levelers, Transcendent Master can be an option if you ramp hard into him. Loxodon Warhammer was just discussed in the Random Card of the Day thread, and that's always a decent choice. Basilisk Collar should be in just about any deck leaning into lifegain as well. Sword of War and Peace can be useful as well if you can keep your hand full.
EDH decks: 1. RGWMayael's Big BeatsRETIRED!
2. BUWMerieke Ri Berit and the 40 Thieves
3. URNiv's Wheeling and Dealing!
4. BURThe Walking Dead
5. GWSisay's Legends of Tomorrow
6. RWBRise of Markov
7. GElvez and stuffz(W)
8. RCrush your enemies(W)
9. BSign right here...(W)