Combos with Gigantoplasm

1. Cast Gigantoplasm by paying its mana cost, choosing to have it enter the battlefield as a copy of Felidar Guardian
2. When Gigantoplasm enters the battlefield, it triggers, blinking Felidar Guardian.
3. When Felidar Guardian enters the battlefield, it triggers, blinking Gigantoplasm. Choose to have Gigantoplasm enter the battlefield as a copy of Felidar Guardian.
4. Repeat from step 2.

1. Cast Gigantoplasm by paying its mana cost. Choose to have it enter as a copy of Princess Yue.
2. Put Gigantoplasm into your graveyard due to the legend rule.
3. When Gigantoplasm dies, it triggers, returning it from your graveyard to the battlefield as a land named Moon. Choose to have it enter as a copy of Wormfang Newt, gaining its abilities.
4. When Gigantoplasm enters, its first ability triggers, exiling it.
5. When Gigantoplasm leaves the battlefield, its second ability triggers, returning Gigantoplasm from exile to the battlefield. Choose to have it enter as a copy of Princess Yue.
6. Repeat from step 2.

1. Activate Kiki-Jiki by tapping it, creating a token copy of Gigantoplasm that has haste. Choose to have Gigantoplasm enter as a copy of Kiki-Jiki.
2. Put the oldest Kiki-Jiki into the graveyard due to the legend rule.
3. Repeat step 1 using the Gigantoplasm token instead.

1. Cast Gigantoplasm by paying its mana cost, choosing to have it enter the battlefield as a copy of Wispweaver Angel
2. When Gigantoplasm enters the battlefield, it triggers, blinking Wispweaver Angel.
3. When Wispweaver Angel enters the battlefield, it triggers, blinking Gigantoplasm. Choose to have Gigantoplasm enter the battlefield as a copy of Wispweaver Angel.
4. Repeat from step 2.

1. Cast Gigantoplasm by paying {3}{U}.
2. Gigantoplasm enters as a copy of Sharuum.
3. Put Sharuum into the graveyard due to the legend rule.
4. Gigantoplasm triggers, returning Sharuum from your graveyard to the battlefield.
5. Put Sharuum into the graveyard due to the legend rule.
6. Sharuum enters the battlefield triggers, returning itself from your graveyard to the battlefield.
7. Repeat from step 5.

Activate Gigantoplasm by paying {1}{U}, shuffling Gigantoplasm into your library and milling your entire library due to it not having a card named Mirror-Mad Phantasm in it.

1. Activate Gigantoplasm by paying {0}.
2. Crackdown Construct and Gigantoplasm trigger, giving themselves +1/+1 until end of turn.
3. Repeat.

1. Cast Gigantoplasm by paying its mana cost, choosing to have it enter the battlefield as a copy of Abdel Adrian.
2. Put the original Abdel Adrian into your graveyard due to the legend rule, causing Karmic Guide to return to the battlefield from exile.
3. Karmic Guide and Gigantoplasm's abilities trigger.
4. Resolve the Gigantoplasm ability, choosing to exile Karmic Guide until Gigantoplasm leaves the battlefield and creating a 1/1 Soldier creature token.
5. Resolve the Karmic Guide trigger, returning Abdel Adrian from your graveyard to the battlefield.
6. Put Gigantoplasm into your graveyard due to the legend rule, causing Karmic Guide to return to the battlefield from exile.
7. Karmic Guide and Abdel Adrian's abilities trigger.
8. Resolve the Abdel Adrian ability, exiling Karmic Guide until Abdel Adrian leaves the battlefield and creating a 1/1 Soldier creature token.
9. Resolve the Karmic Guide trigger, returning Gigantoplasm from your graveyard to the battlefield as a copy of Abdel Adrian.
10. Repeat from step 2.

1. Cast Gigantoplasm by paying its mana cost. Choose to have it enter as a copy of Anticausal Vestige.
2. When Gigantoplasm enters, Cloudstone Curio triggers, returning Anticausal Vestige from the battlefield to your hand.
3. When Anticausal Vestige leaves the battlefield, it triggers, causing you to draw a card and and put Anticausal Vestige from your hand onto the battlefield.
4. When Anticausal Vestige enters, Cloudstone Curio triggers, returning Gigantoplasm from the battlefield to your hand.
5. When Gigantoplasm leaves the battlefield, it triggers, causing you to draw a card and put Gigantoplasm from your hand onto the battlefield as a copy of Anticausal Vestige.
6. Repeat from step 2.

1. Activate Kiora's Follower by tapping it, targeting Gigantoplasm.
2. Illusionist's Bracers triggers, copying Kiora's Follower's ability.
3. Resolve both Kiora's Follower abilities, untapping Gigantoplasm and another permanent you control.
4. Activate Gigantoplasm by tapping it, untapping Kiora's Follower.
5. Repeat.

1. Activate Kiora's Follower by tapping it, targeting Gigantoplasm.
2. Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
3. Resolve the Kiora's Follower ability, untapping Gigantoplasm.
4. Activate Gigantoplasm by tapping it, targeting Kiora's Follower.
5. Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
6. Resolve the Gigantoplasm ability, untapping Kiora's Follower.
7. Repeat.

1. Cast Gigantoplasm by paying its mana cost, choosing to have it enter the battlefield as a copy of Bladewing.
2. Put Bladewing into your graveyard due to the legend rule.
3. Gigantoplasm's enter-the-battlefield ability triggers, returning Bladewing from your graveyard to the battlefield.
4. Put Bladewing into your graveyard due to the legend rule.
5. Bladewing's enter-the-battlefield ability triggers, returning it from your graveyard to the battlefield.
6. Repeat from step 4.

1. Activate Grim Poppet by removing a -1/-1 counter from it, putting a -1/-1 counter on Gigantoplasm.
2. Nest of Scarabs triggers, creating a creature token.
3. Activate Gigantoplasm by removing a -1/-1 counter from it, putting a -1/-1 counter on Grim Poppet.
4. Nest of Scarabs triggers, creating a creature token.
5. Repeat.

1. Activate Grim Poppet by removing a -1/-1 counter from it, putting a -1/-1 counter on Gigantoplasm.
2. Hapatra triggers, creating a creature token.
3. Activate Gigantoplasm by removing a -1/-1 counter from it, putting a -1/-1 counter on Grim Poppet.
4. Hapatra triggers, creating a creature token.
5. Repeat.

1. Activate Forensic Researcher by tapping it, targeting Gigantoplasm.
2. Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
3. Resolve the Forensic Researcher ability, untapping Gigantoplasm.
4. Activate Gigantoplasm by tapping it, targeting Forensic Researcher.
5. Deeproot Pilgrimage triggers, creating a 1/1 Merfolk creature token.
6. Resolve the Gigantoplasm ability, untapping Forensic Researcher.
7. Repeat.