High Perfect Morcant in hand or in the command zone.
Easy Prerequisites
An opponent controls a creature.
Mana Needed
({2} magic symbol) ({B} magic symbol) ({G} magic symbol) plus commander tax if applicable available.
Steps
Cast
High Perfect Morcant either from your hand or the command zone by paying ({2} magic symbol) ({B} magic symbol) ({G} magic symbol) plus commander tax if applicable.
When
High Perfect Morcant enters, its first ability triggers, causing each opponent to put a -1/-1 counter on a creature they control.
Flourishing Defenses triggers for each counter placed this way. Resolve the first trigger, creating a 1/1 Elf Warrior creature token.
When the Elf Warrior enters,
High Perfect Morcant's first ability triggers, causing each opponent to put a -1/-1 counter on a creature they control.
Repeat from step 3.
Notes
You can resolve all additional Flourishing Defense triggers to create additional tokens. The tokens can also be tapped using
High Perfect Morcant to proliferate. This loop can be restarted by having any Elf enter under your control.
Results
Near-infinite ETB.
Near-infinite creature tokens.
Near-infinite proliferate.
Reduce any number of opposing creatures' toughness to 0.
Reduce any number of opposing creatures' toughness to 0 whenever an Elf enters under your control.