Sage of Hours | Conclave Sledge-Captain | Helm of the Host

Cards

All permanents on the battlefield.
Sage of Hours does not have summoning sickness and cannot be blocked by an opponent.
Helm of the Host attached to
Conclave Sledge-Captain.

At the beginning of your combat phase,
Helm of the Host triggers, creating a token copy of
Conclave Sledge-Captain with haste.
When the
Conclave Sledge-Captain token enters the battlefield, its backup ability triggers three times, all targeting
Sage of Hours.
Resolve all
Conclave Sledge-Captain triggers, putting three +1/+1 counters on
Sage of Hours, and causing it to gain the printed abilities three times until end of turn.
Deal combat damage with
Sage of Hours, triggering its abilities granted by
Conclave Sledge-Captain three times, putting three +1/+1 counters on
Sage of Hours for each damage it dealt.
Activate
Sage of Hours by removing all +1/+1 counters from it, causing you to take at least three extra turns after this one.
Repeat during your last extra turn.