Gishath, Sun's Avatar + Mortuary + Hellkite Charger + Phyrexian Altar

Gishath, Sun's Avatar

Mortuary

Hellkite Charger

Phyrexian Altar

How it works

1. Declare Gishath and Hellkite Charger as attackers, triggering Hellkite Charger's ability.
2. Holding priority, activate Phyrexian Altar seven times by sacrificing seven other nontoken Dinosaurs, adding 5.
3. When the Dinosaurs die, Mortuary triggers that many times, putting the Dinosaurs on top of your library from your graveyard.
4. Resolve the Hellkite Charger trigger, causing you to pay 5 to untap all attacking creatures you control and to get an additional combat phase after this one.
5. Deal combat damage to an opponent using Gishath.
6. Gishath triggers, causing you to reveal the top seven cards of your library and put all Dinosaurs revealed this way onto the battlefield.
7. Repeat each combat phase.

This roaring loop turns Gishath, Sun's Avatar into an endless engine of prehistoric devastation by constantly recycling your board. As Gishath and Hellkite Charger lead the charge, sacrificing your newly found Dinosaurs to Phyrexian Altar generates the exact mana needed to fuel Hellkite Charger's extra combat trigger. Meanwhile, Mortuary intercepts those dying beasts, neatly stacking them back on top of your library so Gishath's combat damage trigger can dig them right back out onto the battlefield.