That's a really cool combo I didn't even know existed, but I have a couple of problems with it.
1. Altar is mostly useless outside of the combo.
2. I'm not a fan of combos, especially combos that utilize cards that are useless outside of the combo.
3. There's not much of a way to tutor for either combo outside of
Gamble.
4. It's only infinite colorless mana, one of the more useless infinite mana combo. I need even more, specific, cards to actually win the game.
I pretty much like combos if the cards are individually good (i.e.
Temur Sabertooth +
Wirewood Symbiote + sufficiently large mana dork like
Marwyn, the Nurturer/
Priest of Titania/etc. + cheap elf like
Elvish Visionary/
Elvish Mystic/etc.) or if I am building a combo deck and can tutor up pieces easily (black decks with
Vampiric Tutor, etc.)
Thanks for the cool suggestion, though!