Argothian Elder + Griffin Canyon + Oko, Lorwyn Liege // Oko, Shadowmoor Scion

Prerequisites

• Argothian Elder does not have summoning sickness.
• You control at least one additional land.

Steps

1. 1Activate Oko's first loyalty ability by putting two loyalty counters on it, causing Argothian Elder to gain all creature types.
2. 2Activate Argothian Elder by tapping it, untapping Griffin Canyon and another land.
3. 3Activate Griffin Canyon's second ability by tapping it, untapping Argothian Elder and giving it +1/+1 until end of turn.
4. 4Repeat from step 2.

Effects

• Infinite mana lands you control can produce
• Infinite untap of lands you control
• Infinitely large creature until end of turn