all prototype cards mtg Myr | Mirrodin | Modern Prototype commander, tell me what

In addition to having islandwalk, a very great keyword given the prevalence of blue in Commander, Sygg gives any merfolk protection from a color for just

If you happen to be drawing cards from other sources as well, all the better

In applicable matchups, this is a strictly better Mana Leak, making it easy to win counterwars or delay your opponents trying to set up some powerful play

Is this viable for 1 on 1

Convoke only works when you cast convoke spells, and only to reduce the mana cost of the spell being cast

Once the player fails to discard and instead mills a card, all further effects of each additional Magus of the Chains will not do anything