Creature with MV<=1 that enters the battlefield with a +1/+1 counter on it
Initial Card State
Creature with MV<=1 that enters the battlefield with a +1/+1 counter on it in hand.
All other permanents on the battlefield.
Notable Prerequisites
You have enough mana to cast the creature with MV<=1 if it doesn't have ({X} magic symbol) in its mana cost, or ({1} magic symbol) available otherwise.
Steps
Cast the creature with MV<=1 by paying its mana cost if it doesn't have ({X} magic symbol) in its mana cost, or by paying ({1} magic symbol) otherwise, causing the creature to enter the battlefield with a +1/+1 counter on it.
Activate
Phyrexian Altar by sacrificing the creature, adding ({1} magic symbol) .
When the creature dies,
Reyhan triggers, putting a +1/+1 counter on
Evolution Witness.
Evolution Witness triggers, returning the creature from your graveyard to your hand.