Also just as an addition here, even if Lazav, the Multifarious becomes a copy of Myr Welder (or any permanent with 'imprint'), it will be unable to make use of 'imprint' as it only takes effect when that object enters the battlefield, and Lazav is already on the battlefield when it copies and therefore cannot 'imprint' anything.
There will not be any welcome boosters between M21 and ZR, as they are the last two of the four 'premier sets' of the year. (premier set refers to the big standard rotating releases, that evolve the MTG story etc)
The other sets you are probably referring to as being released between this time are 'supplement' releases, things that are extra and are not a regular part of the normal releases, as these fit into 'slots' that are open within the year (usually so something new is released monthly). Also due to the covid situation, it has made it seem that a lot has been released in a rather small time, due to printing and delivery issues, such as Double Masters and Jumpstart, but these are standalone releases, not necessarily for new players.
As Welcome boosters are made with new players in mind, they were usually only made for 'Core sets' or to say the yearly 'generic' premier set, which M21 is (in one form or another in pervious years). As there seems to be a welcome pack for ZR, my guess would be that they may release a welcome pack for each premier set, to help new players join the game year round and not just with a single release a year window.
You are right that if you target a creature with Stony Strength, that is also under the affect of Entrancing Lyre, it will become untapped.
However if that creature does become tapped later on (by an any effect that will tap it such as attacking), then the Lyre's effect is still affecting it, and will stay tapped as before until the Lyre is untapped. Just remember that being able to get your creature untapped by other means does/will not remove the lyre's effect.
Could possibly see this being an issue with Zirda, the Dawnwaker, especially if you mutate one so you have twice the effect on the field to make the activation cost only 1.
Iam pretty sad to see Cauldron Familiar go, as ive not had any chance play since the March Lockdown, and mono black was my main deck. Hopefully it will get another chance later on, but iam not happy (especially since my LGC will probably start FNM again fairly soon).
That 2/1 Blue Myr token is sweet! I've not seen it as I've been out of the game for a few years and only started again with Thrones.
Also that Copy Token is also sweet and very welcomed! I will need quite a few for my Riku EDH Deck, though it may be hard to keep track as to what it represents if I have too many things copied
The other sets you are probably referring to as being released between this time are 'supplement' releases, things that are extra and are not a regular part of the normal releases, as these fit into 'slots' that are open within the year (usually so something new is released monthly). Also due to the covid situation, it has made it seem that a lot has been released in a rather small time, due to printing and delivery issues, such as Double Masters and Jumpstart, but these are standalone releases, not necessarily for new players.
As Welcome boosters are made with new players in mind, they were usually only made for 'Core sets' or to say the yearly 'generic' premier set, which M21 is (in one form or another in pervious years). As there seems to be a welcome pack for ZR, my guess would be that they may release a welcome pack for each premier set, to help new players join the game year round and not just with a single release a year window.
~Funk Pirate
However if that creature does become tapped later on (by an any effect that will tap it such as attacking), then the Lyre's effect is still affecting it, and will stay tapped as before until the Lyre is untapped. Just remember that being able to get your creature untapped by other means does/will not remove the lyre's effect.
~Funk Pirate
~Funk Pirate
Also that Copy Token is also sweet and very welcomed! I will need quite a few for my Riku EDH Deck, though it may be hard to keep track as to what it represents if I have too many things copied
~Funk Pirate
This has been bugging me as the answer given is wrong as this does not work.
As Horde of Notions PLAYS the card and does not CAST it, therefore Chakram Retriever does not trigger.
Modern:
Turn one: Breeding Pool>Llanowar Elves
Turn Two: Westvale Abbey>Amoeboid Changeling
Turn Three: Any land>Elemental Uprising+Moonmist
Alternately if Legacy:
Turn one: Tropical Island>Llanowar Elves
Turn Two: Westvale Abbey>Amoeboid Changeling
Turn Three: Any land>Animate Land+Moonmist
~Funk Pirate