Once Monster Manual is on the battlefield, for just two mana you can put any creature directly onto the battlefield
Trostani main-phased Return to Dust to hit both my Ashnod's Altar and Gerrards Gauntlet of Power and then passed, still threatless
Table of Contents show What is the Party Mechanic in MTG
Heartfire Immolator can obviously work as a simple attacker that gets stronger the more spells you cast
Hardened Scales will see this happen, and further replace that game action by making it enter with X+1 counters instead
All of History, All at Once A wild ride for any deck playing with time counters, whether it's suspend, vanishing, or some oddball interaction, All of History, All at Once gives you the power to add or remove them however you like