Watchful Radstag + Master Biomancer + Tyranid Prime

Prerequisites

• Watchful Radstag's power or toughness is less than or equal to Master Biomancer's power or toughness respectively.
• Watchful Radstag has toughness 3 or less.

Steps

1. 1Cast Tyranid Prime by paying .
2. 2When it enters, Watchful Radstag's evolve ability triggers, putting a +1/+1 counter on it. Its second ability triggers, creating a token copy of it that enters with a number of +1/+1 counters equal to Master Biomancer's power.
3. 3When the token enters, each creature you control's evolve ability will trigger if the token has lesser toughness or power.
4. 4Resolve all evolve triggers except those from Watchful Radstags, putting a +1/+1 counter on each of them.
5. 5Resolve a Watchful Radstag trigger, putting a +1/+1 counter on it. Its second ability triggers, creating a token copy of it that enters with a number of +1/+1 counters equal to Master Biomancer's power.
6. 6Repeat from step 3.

Effects

• Infinite +1/+1 counters on an infinite number of creature tokens
• Infinite +1/+1 counters on creatures you control
• Infinite creature ETB