Dyson Reed, Immaterial Master

Landfall — Whenever a land enters the battlefield under your control, put a +1/+1 counter on target creature you control.
Whenever a creature you control dies, put a +1/+1 counter on target creature you control.
If a creature has three or more +1/+1 counters, it is an artifact in addition to its other types.
"Ah... artificial immortality..."